diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceImpl.java b/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceImpl.java
index 92fab64..26403a3 100644
--- a/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceImpl.java
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceImpl.java
@@ -175,7 +175,7 @@ public class UsbDeviceImpl implements UsbDevice
 
     @Override
     public String getManufacturerString() throws UsbException,
-        UnsupportedEncodingException, UsbDisconnectedException
+        UnsupportedEncodingException
     {
         final byte index = this.descriptor.iManufacturer();
         if (index == 0) return null;
@@ -188,7 +188,8 @@ public class UsbDeviceImpl implements UsbDevice
      */
 
     @Override
-    public String getSerialNumberString() throws UsbException
+    public String getSerialNumberString() throws UsbException,
+        UnsupportedEncodingException
     {
         final byte index = this.descriptor.iSerialNumber();
         if (index == 0) return null;
@@ -201,7 +202,8 @@ public class UsbDeviceImpl implements UsbDevice
      */
 
     @Override
-    public String getProductString() throws UsbException
+    public String getProductString() throws UsbException,
+        UnsupportedEncodingException
     {
         final byte index = this.descriptor.iProduct();
         if (index == 0) return null;
@@ -340,9 +342,10 @@ public class UsbDeviceImpl implements UsbDevice
      */
 
     @Override
-    public String getString(final byte index) throws UsbException
+    public String getString(final byte index) throws UsbException,
+        UnsupportedEncodingException
     {
-        return getUsbStringDescriptor(index).toString();
+        return getUsbStringDescriptor(index).getString();
     }
 
 
diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceScanner.java b/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceScanner.java
new file mode 100644
index 0000000..360426c
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbDeviceScanner.java
@@ -0,0 +1,101 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import static de.ailis.usb4java.USB.USB_CLASS_HUB;
+import static de.ailis.usb4java.USB.usb_find_busses;
+import static de.ailis.usb4java.USB.usb_find_devices;
+import static de.ailis.usb4java.USB.usb_get_busses;
+import de.ailis.usb4java.USBLock;
+import de.ailis.usb4java.USB_Bus;
+import de.ailis.usb4java.USB_Device;
+import de.ailis.usb4java.USB_Device_Descriptor;
+
+
+/**
+ * USB Device scanner.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+class UsbDeviceScanner
+{
+    /** The virtual USB root hub. */
+    private final VirtualRootHub rootHub;
+
+
+    /**
+     * Constructor.
+     *
+     * @param rootHub
+     *            The virtual USB root hub.
+     */
+
+    public UsbDeviceScanner(final VirtualRootHub rootHub)
+    {
+        this.rootHub = rootHub;
+        scan();
+    }
+
+
+    /**
+     * Scans for USB device connection changes.
+     */
+
+    private void scan()
+    {
+        USBLock.acquire();
+        try
+        {
+            final int bussesChanged = usb_find_busses();
+            final int devicesChanged = usb_find_devices();
+            if (bussesChanged + devicesChanged == 0) return;
+
+            USB_Bus bus = usb_get_busses();
+            while (bus != null)
+            {
+                final USB_Device device = bus.root_dev();
+                if (device != null)
+                {
+                    addDevice(this.rootHub, device);
+                }
+                bus = bus.next();
+            }
+        }
+        finally
+        {
+            USBLock.release();
+        }
+    }
+
+
+    /**
+     * Adds the specified device to the specified hub and recursively scans for
+     * more devices.
+     *
+     * @param parentHub
+     *            The parent hub
+     * @param device
+     *            The device to add and scan.
+     */
+
+    private void addDevice(final UsbPorts parentHub, final USB_Device device)
+    {
+        final USB_Device_Descriptor descriptor = device.descriptor();
+        if (descriptor.bDeviceClass() == USB_CLASS_HUB)
+        {
+            final UsbHubImpl hub = new UsbHubImpl(device);
+            parentHub.connectUsbDevice(hub);
+            for (final USB_Device child : device.children())
+                addDevice(hub, child);
+        }
+        else
+        {
+            final UsbDeviceImpl dev = new UsbDeviceImpl(device);
+            parentHub.connectUsbDevice(dev);
+        }
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbHubImpl.java b/src/main/java/de/ailis/usb4java/jsr80/UsbHubImpl.java
new file mode 100644
index 0000000..048f2b3
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbHubImpl.java
@@ -0,0 +1,134 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import java.util.List;
+
+import javax.usb.UsbDevice;
+import javax.usb.UsbHub;
+import javax.usb.UsbPort;
+
+import de.ailis.usb4java.USB_Device;
+
+
+/**
+ * usb4java implementation of JSR-80 UsbHub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+public final class UsbHubImpl extends UsbDeviceImpl implements UsbHub, UsbPorts
+{
+    /** The hub ports. */
+    private final UsbPortsImpl ports = new UsbPortsImpl(this);
+
+
+    /**
+     * Constructor.
+     *
+     * @param device
+     *            The low-level USB device.
+     */
+
+    public UsbHubImpl(final USB_Device device)
+    {
+        super(device);
+    }
+
+
+    /**
+     * @see UsbHub#getNumberOfPorts()
+     */
+
+    @Override
+    public byte getNumberOfPorts()
+    {
+        return this.ports.getNumberOfPorts();
+    }
+
+
+    /**
+     * @see UsbHub#getUsbPorts()
+     */
+
+    @Override
+    public List<UsbPort> getUsbPorts()
+    {
+        return this.ports.getUsbPorts();
+    }
+
+
+    /**
+     * @see UsbHub#getUsbPort(byte)
+     */
+
+    @Override
+    public UsbPort getUsbPort(final byte number)
+    {
+        return this.ports.getUsbPort(number);
+    }
+
+
+    /**
+     * @see UsbHub#getAttachedUsbDevices()
+     */
+
+    @Override
+    public List<UsbDevice> getAttachedUsbDevices()
+    {
+        return this.ports.getAttachedUsbDevices();
+    }
+
+
+    /**
+     * @see UsbHub#isRootUsbHub()
+     */
+
+    @Override
+    public boolean isRootUsbHub()
+    {
+        return false;
+    }
+
+
+    /**
+     * Connects a new device to this hub.
+     *
+     * @param device
+     *            The device to add to this hub.
+     */
+
+    @Override
+    public void connectUsbDevice(final UsbDevice device)
+    {
+        this.ports.connectUsbDevice(device);
+    }
+
+
+    /**
+     * Disconnects the specified device from the hub.
+     *
+     * @param device
+     *            The device to disconnected from the hub.
+     */
+
+    @Override
+    public void disconnectUsbDevice(final UsbDevice device)
+    {
+        this.ports.disconnectUsbDevice(device);
+    }
+
+
+    /**
+     * @see de.ailis.usb4java.jsr80.UsbDeviceImpl#isUsbHub()
+     */
+
+    @Override
+    public boolean isUsbHub()
+    {
+        return true;
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbPortImpl.java b/src/main/java/de/ailis/usb4java/jsr80/UsbPortImpl.java
new file mode 100644
index 0000000..32eee22
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbPortImpl.java
@@ -0,0 +1,119 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import javax.usb.UsbDevice;
+import javax.usb.UsbHub;
+import javax.usb.UsbPort;
+
+
+/**
+ * usb4java implementation of UsbPort.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+public final class UsbPortImpl implements UsbPort
+{
+    /** The USB hub this port belongs to. */
+    private final UsbHub hub;
+
+    /** The port number. */
+    private final byte portNumber;
+
+    /** The attached device. */
+    private UsbDevice device;
+
+
+    /**
+     * Constructor.
+     *
+     * @param hub
+     *            The USB hub this port belongs to.
+     * @param portNumber
+     *            The port number.
+     */
+
+    public UsbPortImpl(final UsbHub hub, final byte portNumber)
+    {
+        this.hub = hub;
+        this.portNumber = portNumber;
+    }
+
+
+    /**
+     * @see UsbPort#getPortNumber()
+     */
+
+    @Override
+    public final byte getPortNumber()
+    {
+        return this.portNumber;
+    }
+
+
+    /**
+     * @see UsbPort#getUsbHub()
+     */
+
+    @Override
+    public final UsbHub getUsbHub()
+    {
+        return this.hub;
+    }
+
+
+    /**
+     * @see UsbPort#getUsbDevice()
+     */
+
+    @Override
+    public final UsbDevice getUsbDevice()
+    {
+        return this.device;
+    }
+
+
+    /**
+     * @see UsbPort#isUsbDeviceAttached()
+     */
+
+    @Override
+    public final boolean isUsbDeviceAttached()
+    {
+        return this.device != null;
+    }
+
+
+    /**
+     * Connects the specified device to this port.
+     *
+     * @param device
+     *            The device to connect.
+     */
+
+    final void connectUsbDevice(final UsbDevice device)
+    {
+        if (device == null)
+            throw new IllegalArgumentException("device must not be null");
+        if (this.device != null)
+            throw new IllegalStateException(
+                "Port already has a connected device");
+        this.device = device;
+    }
+
+
+    /**
+     * Disconnects the currently connected device.
+     */
+
+    final void disconnectUsbDevice()
+    {
+        if (this.device == null)
+            throw new IllegalStateException("Port has no connected device");
+        this.device = null;
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbPorts.java b/src/main/java/de/ailis/usb4java/jsr80/UsbPorts.java
new file mode 100644
index 0000000..6a8c713
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbPorts.java
@@ -0,0 +1,78 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import java.util.List;
+
+import javax.usb.UsbDevice;
+import javax.usb.UsbPort;
+
+
+/**
+ * A list of USB ports.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+interface UsbPorts
+{
+    /**
+     * Returns the number of ports.
+     *
+     * @return The number of ports.
+     */
+
+    byte getNumberOfPorts();
+
+
+    /**
+     * Returns the ports.
+     *
+     * @return The ports.
+     */
+
+    List<UsbPort> getUsbPorts();
+
+
+    /**
+     * Returns the USB port with the specified port number.
+     *
+     * @param number
+     *            The USB port number.
+     * @return The USB port or null if no such port.
+     */
+
+    UsbPort getUsbPort(final byte number);
+
+
+    /**
+     * Returns the attached USB devices.
+     *
+     * @return The attached USB devices.
+     */
+
+    List<UsbDevice> getAttachedUsbDevices();
+
+
+    /**
+     * Connects a new device to this hub.
+     *
+     * @param device
+     *            The device to add to this hub.
+     */
+
+    void connectUsbDevice(final UsbDevice device);
+
+
+    /**
+     * Disconnects the specified device from the hub.
+     *
+     * @param device
+     *            The device to disconnected from the hub.
+     */
+
+    void disconnectUsbDevice(final UsbDevice device);
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbPortsImpl.java b/src/main/java/de/ailis/usb4java/jsr80/UsbPortsImpl.java
new file mode 100644
index 0000000..9ccb64a
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbPortsImpl.java
@@ -0,0 +1,183 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import javax.usb.UsbDevice;
+import javax.usb.UsbHub;
+import javax.usb.UsbPort;
+
+
+/**
+ * A list of USB ports.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class UsbPortsImpl implements UsbPorts
+{
+    /** The hub ports. */
+    private final List<UsbPort> ports = new ArrayList<UsbPort>();
+
+    /** The hub these ports belong to. */
+    private final UsbHub hub;
+
+
+    /**
+     * Constructor.
+     *
+     * @param hub
+     *            The hub the port belongs to.
+     */
+
+    UsbPortsImpl(final UsbHub hub)
+    {
+        this.hub = hub;
+        addPort();
+    }
+
+
+    /**
+     * Adds a new port and returns it.
+     *
+     * @return The added port.
+     */
+
+    private UsbPort addPort()
+    {
+        final byte portNo = (byte) (this.ports.size() + 1);
+        final UsbPortImpl port = new UsbPortImpl(this.hub, portNo);
+        this.ports.add(port);
+        return port;
+    }
+
+
+    /**
+     * Returns the first free port or adds a new one if no free port was found.
+     *
+     * @return The first free port.
+     */
+
+    private UsbPort getFreePort()
+    {
+        for (final UsbPort port : this.ports)
+        {
+            if (!port.isUsbDeviceAttached()) return port;
+        }
+        return addPort();
+    }
+
+
+    /**
+     * Returns the number of ports.
+     *
+     * @return The number of ports.
+     */
+
+    @Override
+    public byte getNumberOfPorts()
+    {
+        return (byte) this.ports.size();
+    }
+
+
+    /**
+     * Returns the ports.
+     *
+     * @return The ports.
+     */
+
+    @Override
+    public List<UsbPort> getUsbPorts()
+    {
+        return Collections.unmodifiableList(this.ports);
+    }
+
+
+    /**
+     * Returns the USB port with the specified port number.
+     *
+     * @param number
+     *            The USB port number.
+     * @return The USB port or null if no such port.
+     */
+
+    @Override
+    public UsbPort getUsbPort(final byte number)
+    {
+        final int index = (number & 0xff) - 1;
+        if (index < 0 || index >= this.ports.size()) return null;
+        return this.ports.get(index);
+    }
+
+
+    /**
+     * Returns the attached USB devices.
+     *
+     * @return The attached USB devices.
+     */
+
+    @Override
+    public List<UsbDevice> getAttachedUsbDevices()
+    {
+        final List<UsbDevice> devices = new ArrayList<UsbDevice>();
+        synchronized (this.ports)
+        {
+            for (final UsbPort port : this.ports)
+            {
+                if (port.isUsbDeviceAttached())
+                {
+                    devices.add(port.getUsbDevice());
+                }
+            }
+        }
+        return Collections.unmodifiableList(devices);
+    }
+
+
+    /**
+     * Connects a new device to this hub.
+     *
+     * @param device
+     *            The device to add to this hub.
+     */
+
+    @Override
+    public void connectUsbDevice(final UsbDevice device)
+    {
+        synchronized (this.ports)
+        {
+            final UsbPortImpl port = (UsbPortImpl) getFreePort();
+            port.connectUsbDevice(device);
+        }
+    }
+
+
+    /**
+     * Disconnects the specified device from the hub.
+     *
+     * @param device
+     *            The device to disconnected from the hub.
+     */
+
+    @Override
+    public void disconnectUsbDevice(final UsbDevice device)
+    {
+        synchronized (this.ports)
+        {
+            for (final UsbPort port : this.ports)
+            {
+                if (device.equals(port.getUsbDevice()))
+                {
+                    ((UsbPortImpl) port).disconnectUsbDevice();
+                }
+            }
+        }
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/UsbServicesImpl.java b/src/main/java/de/ailis/usb4java/jsr80/UsbServicesImpl.java
index 91306ee..7c0c65a 100644
--- a/src/main/java/de/ailis/usb4java/jsr80/UsbServicesImpl.java
+++ b/src/main/java/de/ailis/usb4java/jsr80/UsbServicesImpl.java
@@ -5,6 +5,8 @@
 
 package de.ailis.usb4java.jsr80;
 
+import static de.ailis.usb4java.USB.usb_init;
+
 import javax.usb.UsbException;
 import javax.usb.UsbHub;
 import javax.usb.UsbServices;
@@ -31,16 +33,33 @@ public final class UsbServicesImpl implements UsbServices
     /** The USB services listeners. */
     private final UsbServicesListenerList listeners = new UsbServicesListenerList();
 
+    /** The virtual USB root hub. */
+    private final VirtualRootHub rootHub;
+
+    /** The USB device scanner. */
+    private final UsbDeviceScanner deviceScanner;
+
+
+    /**
+     * Constructor.
+     */
+
+    public UsbServicesImpl()
+    {
+        usb_init();
+        this.rootHub = new VirtualRootHub();
+        this.deviceScanner = new UsbDeviceScanner(this.rootHub);
+    }
+
 
     /**
      * @see UsbServices#getRootUsbHub()
      */
 
     @Override
-    public final UsbHub getRootUsbHub() throws UsbException, SecurityException
+    public UsbHub getRootUsbHub() throws UsbException, SecurityException
     {
-        // TODO Implement me
-        throw new UnsupportedOperationException();
+        return this.rootHub;
     }
 
 
@@ -49,7 +68,7 @@ public final class UsbServicesImpl implements UsbServices
      */
 
     @Override
-    public final void addUsbServicesListener(final UsbServicesListener listener)
+    public void addUsbServicesListener(final UsbServicesListener listener)
     {
         this.listeners.add(listener);
     }
@@ -60,7 +79,7 @@ public final class UsbServicesImpl implements UsbServices
      */
 
     @Override
-    public final void removeUsbServicesListener(final UsbServicesListener listener)
+    public void removeUsbServicesListener(final UsbServicesListener listener)
     {
         this.listeners.remove(listener);
     }
@@ -71,7 +90,7 @@ public final class UsbServicesImpl implements UsbServices
      */
 
     @Override
-    public final String getApiVersion()
+    public String getApiVersion()
     {
         return API_VERSION;
     }
@@ -82,7 +101,7 @@ public final class UsbServicesImpl implements UsbServices
      */
 
     @Override
-    public final String getImpVersion()
+    public String getImpVersion()
     {
         return IMP_VERSION;
     }
@@ -93,7 +112,7 @@ public final class UsbServicesImpl implements UsbServices
      */
 
     @Override
-    public final String getImpDescription()
+    public String getImpDescription()
     {
         return IMP_DESCRIPTION;
     }
diff --git a/src/main/java/de/ailis/usb4java/jsr80/VirtualRootHub.java b/src/main/java/de/ailis/usb4java/jsr80/VirtualRootHub.java
new file mode 100644
index 0000000..34456bf
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/VirtualRootHub.java
@@ -0,0 +1,398 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import java.io.UnsupportedEncodingException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.usb.UsbConfiguration;
+import javax.usb.UsbConst;
+import javax.usb.UsbControlIrp;
+import javax.usb.UsbDevice;
+import javax.usb.UsbDeviceDescriptor;
+import javax.usb.UsbDisconnectedException;
+import javax.usb.UsbException;
+import javax.usb.UsbHub;
+import javax.usb.UsbPort;
+import javax.usb.UsbStringDescriptor;
+import javax.usb.event.UsbDeviceListener;
+import javax.usb.util.DefaultUsbControlIrp;
+
+
+/**
+ * The virtual USB root hub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class VirtualRootHub implements UsbHub, UsbPorts
+{
+    /** The manufacturer string. */
+    private static final String MANUFACTURER = "de.ailis.usb4java";
+
+    /** The manufacturer string. */
+    private static final String PRODUCT = "Virtual Root Hub";
+
+    /** The serial number. */
+    private static final String SERIAL_NUMBER = "0.1.12-1";
+
+    /** The configurations. */
+    private final List<UsbConfiguration> configurations =
+            new ArrayList<UsbConfiguration>(1);
+
+    /** The device descriptor. */
+    private final UsbDeviceDescriptor descriptor = new VirtualUsbDeviceDescriptor();
+
+    /** The device listeners. */
+    private final UsbDeviceListenerList listeners = new UsbDeviceListenerList();
+
+    /** The hub ports. */
+    private final UsbPortsImpl ports = new UsbPortsImpl(this);
+
+
+    /**
+     * Constructor.
+     */
+
+    VirtualRootHub()
+    {
+        this.configurations.add(new VirtualUsbConfiguration(this));
+    }
+
+
+    /**
+     * @see UsbDevice#getParentUsbPort()
+     */
+
+    @Override
+    public UsbPort getParentUsbPort() throws UsbDisconnectedException
+    {
+        return null;
+    }
+
+
+    /**
+     * @see UsbDevice#isUsbHub()
+     */
+
+    @Override
+    public boolean isUsbHub()
+    {
+        return true;
+    }
+
+
+    /**
+     * @see UsbDevice#getManufacturerString()
+     */
+
+    @Override
+    public String getManufacturerString() throws UsbException,
+        UnsupportedEncodingException, UsbDisconnectedException
+    {
+        return MANUFACTURER;
+    }
+
+
+    /**
+     * @see UsbDevice#getSerialNumberString()
+     */
+
+    @Override
+    public String getSerialNumberString() throws UsbException,
+        UnsupportedEncodingException, UsbDisconnectedException
+    {
+        return SERIAL_NUMBER;
+    }
+
+
+    /**
+     * @see UsbDevice#getProductString()
+     */
+
+    @Override
+    public String getProductString() throws UsbException,
+        UnsupportedEncodingException, UsbDisconnectedException
+    {
+        return PRODUCT;
+    }
+
+
+    /**
+     * @see UsbDevice#getSpeed()
+     */
+
+    @Override
+    public Object getSpeed()
+    {
+        return UsbConst.DEVICE_SPEED_UNKNOWN;
+    }
+
+
+    /**
+     * @see UsbDevice#getUsbConfigurations()
+     */
+
+    @Override
+    public List<UsbConfiguration> getUsbConfigurations()
+    {
+        return this.configurations;
+    }
+
+
+    /**
+     * @see UsbDevice#getUsbConfiguration(byte)
+     */
+
+    @Override
+    public UsbConfiguration getUsbConfiguration(final byte number)
+    {
+        if (number != 1) return null;
+        return this.configurations.get(0);
+    }
+
+
+    /**
+     * @see UsbDevice#containsUsbConfiguration(byte)
+     */
+
+    @Override
+    public boolean containsUsbConfiguration(final byte number)
+    {
+        return number == 1;
+    }
+
+
+    /**
+     * @see UsbDevice#getActiveUsbConfigurationNumber()
+     */
+
+    @Override
+    public byte getActiveUsbConfigurationNumber()
+    {
+        return 1;
+    }
+
+
+    /**
+     * @see UsbDevice#getActiveUsbConfiguration()
+     */
+
+    @Override
+    public UsbConfiguration getActiveUsbConfiguration()
+    {
+        return this.configurations.get(0);
+    }
+
+
+    /**
+     * @see UsbDevice#isConfigured()
+     */
+
+    @Override
+    public boolean isConfigured()
+    {
+        return true;
+    }
+
+
+    /**
+     * @see UsbDevice#getUsbDeviceDescriptor()
+     */
+
+    @Override
+    public UsbDeviceDescriptor getUsbDeviceDescriptor()
+    {
+        return this.descriptor;
+    }
+
+
+    /**
+     * @see UsbDevice#getUsbStringDescriptor(byte)
+     */
+
+    @Override
+    public UsbStringDescriptor getUsbStringDescriptor(final byte index)
+        throws UsbException, UsbDisconnectedException
+    {
+        throw new UsbException(
+            "Can't get USB string descriptor from virtual device");
+    }
+
+
+    /**
+     * @see UsbDevice#getString(byte)
+     */
+
+    @Override
+    public String getString(final byte index) throws UsbException,
+        UnsupportedEncodingException, UsbDisconnectedException
+    {
+        throw new UsbException("Can't get string from virtual device");
+    }
+
+
+    /**
+     * @see UsbDevice#syncSubmit(javax.usb.UsbControlIrp)
+     */
+
+    @Override
+    public void syncSubmit(final UsbControlIrp irp) throws UsbException,
+        IllegalArgumentException, UsbDisconnectedException
+    {
+        throw new UsbException("Can't syncSubmit on virtual device");
+    }
+
+
+    /**
+     * @see UsbDevice#asyncSubmit(javax.usb.UsbControlIrp)
+     */
+
+    @Override
+    public void asyncSubmit(final UsbControlIrp irp) throws UsbException,
+        IllegalArgumentException, UsbDisconnectedException
+    {
+        throw new UsbException("Can't asyncSubmit on virtual device");
+    }
+
+
+    /**
+     * @see UsbDevice#syncSubmit(java.util.List)
+     */
+
+    @Override
+    public void syncSubmit(@SuppressWarnings("rawtypes") final List list)
+        throws UsbException, IllegalArgumentException, UsbDisconnectedException
+    {
+        throw new UsbException("Can't syncSubmit on virtual device");
+    }
+
+
+    /**
+     * @see UsbDevice#asyncSubmit(java.util.List)
+     */
+
+    @Override
+    public void asyncSubmit(@SuppressWarnings("rawtypes") final List list)
+        throws UsbException,
+        IllegalArgumentException, UsbDisconnectedException
+    {
+        throw new UsbException("Can't asyncSubmit on virtual device");
+    }
+
+
+    /**
+     * @see UsbDevice#createUsbControlIrp(byte, byte, short, short)
+     */
+
+    @Override
+    public UsbControlIrp createUsbControlIrp(final byte bmRequestType,
+        final byte bRequest,
+        final short wValue, final short wIndex)
+    {
+        return new DefaultUsbControlIrp(bmRequestType, bRequest, wValue, wIndex);
+    }
+
+
+    /**
+     * @see UsbDevice#addUsbDeviceListener(javax.usb.event.UsbDeviceListener)
+     */
+
+    @Override
+    public void addUsbDeviceListener(final UsbDeviceListener listener)
+    {
+        this.listeners.add(listener);
+    }
+
+
+    /**
+     * @see UsbDevice#removeUsbDeviceListener(javax.usb.event.UsbDeviceListener)
+     */
+
+    @Override
+    public void removeUsbDeviceListener(final UsbDeviceListener listener)
+    {
+        this.listeners.remove(listener);
+    }
+
+
+    /**
+     * @see javax.usb.UsbHub#getNumberOfPorts()
+     */
+
+    @Override
+    public byte getNumberOfPorts()
+    {
+        return this.ports.getNumberOfPorts();
+    }
+
+
+    /**
+     * @see javax.usb.UsbHub#getUsbPorts()
+     */
+
+    @Override
+    public List<UsbPort> getUsbPorts()
+    {
+        return this.ports.getUsbPorts();
+    }
+
+
+    /**
+     * @see javax.usb.UsbHub#getUsbPort(byte)
+     */
+
+    @Override
+    public UsbPort getUsbPort(final byte number)
+    {
+        return this.ports.getUsbPort(number);
+    }
+
+
+    /**
+     * @see javax.usb.UsbHub#getAttachedUsbDevices()
+     */
+
+    @Override
+    public List<UsbDevice> getAttachedUsbDevices()
+    {
+        return this.ports.getAttachedUsbDevices();
+    }
+
+
+    /**
+     * @see javax.usb.UsbHub#isRootUsbHub()
+     */
+
+    @Override
+    public boolean isRootUsbHub()
+    {
+        return true;
+    }
+
+
+    /**
+     * @see UsbPorts#connectUsbDevice(UsbDevice)
+     */
+
+    @Override
+    public void connectUsbDevice(final UsbDevice device)
+    {
+        this.ports.connectUsbDevice(device);
+    }
+
+
+    /**
+     * @see UsbPorts#disconnectUsbDevice(UsbDevice)
+     */
+
+    @Override
+    public void disconnectUsbDevice(final UsbDevice device)
+    {
+        this.ports.disconnectUsbDevice(device);
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbConfiguration.java b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbConfiguration.java
new file mode 100644
index 0000000..8a503a8
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbConfiguration.java
@@ -0,0 +1,128 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import java.io.UnsupportedEncodingException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.usb.UsbConfiguration;
+import javax.usb.UsbConfigurationDescriptor;
+import javax.usb.UsbDevice;
+import javax.usb.UsbDisconnectedException;
+import javax.usb.UsbException;
+import javax.usb.UsbInterface;
+
+
+/**
+ * Virtual USB configuration used by the virtual USB root hub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class VirtualUsbConfiguration implements UsbConfiguration
+{
+    /** The virtual interfaces. */
+    private final List<UsbInterface> interfaces = new ArrayList<UsbInterface>();
+
+    /** The device this configuration belongs to. */
+    private final UsbDevice device;
+
+    /** The USB configuration descriptor. */
+    private final UsbConfigurationDescriptor descriptor = new VirtualUsbConfigurationDescriptor();
+
+
+    /**
+     * Constructor.
+     *
+     * @param device
+     *            The device this configuration belongs to.
+     */
+
+    VirtualUsbConfiguration(final UsbDevice device)
+    {
+        this.device = device;
+        this.interfaces.add(new VirtualUsbInterface(this));
+    }
+
+
+    /**
+     * @see UsbConfiguration#isActive()
+     */
+
+    @Override
+    public boolean isActive()
+    {
+        return true;
+    }
+
+
+    /**
+     * @see UsbConfiguration#getUsbInterfaces()
+     */
+
+    @Override
+    public List<UsbInterface> getUsbInterfaces()
+    {
+        return this.interfaces;
+    }
+
+
+    /**
+     * @see UsbConfiguration#getUsbInterface(byte)
+     */
+
+    @Override
+    public UsbInterface getUsbInterface(final byte number)
+    {
+        if (number != 0) return null;
+        return this.interfaces.get(0);
+    }
+
+
+    /**
+     * @see UsbConfiguration#containsUsbInterface(byte)
+     */
+
+    @Override
+    public boolean containsUsbInterface(final byte number)
+    {
+        return number == 0;
+    }
+
+
+    /**
+     * @see javax.usb.UsbConfiguration#getUsbDevice()
+     */
+
+    @Override
+    public UsbDevice getUsbDevice()
+    {
+        return this.device;
+    }
+
+
+    /**
+     * @see javax.usb.UsbConfiguration#getUsbConfigurationDescriptor()
+     */
+
+    @Override
+    public UsbConfigurationDescriptor getUsbConfigurationDescriptor()
+    {
+        return this.descriptor;
+    }
+
+    /**
+     * @see javax.usb.UsbConfiguration#getConfigurationString()
+     */
+
+    @Override
+    public String getConfigurationString() throws UsbException,
+        UnsupportedEncodingException, UsbDisconnectedException
+    {
+        return null;
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbConfigurationDescriptor.java b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbConfigurationDescriptor.java
new file mode 100644
index 0000000..9165fc3
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbConfigurationDescriptor.java
@@ -0,0 +1,108 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import javax.usb.UsbConfigurationDescriptor;
+import javax.usb.UsbConst;
+import javax.usb.UsbDescriptor;
+
+
+/**
+ * The virtual USB configuration descriptor used by the virtual USB root hub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class VirtualUsbConfigurationDescriptor implements
+        UsbConfigurationDescriptor
+{
+    /**
+     * @see UsbDescriptor#bLength()
+     */
+
+    @Override
+    public byte bLength()
+    {
+        return UsbConst.DESCRIPTOR_MIN_LENGTH_CONFIGURATION;
+    }
+
+
+    /**
+     * @see UsbDescriptor#bDescriptorType()
+     */
+
+    @Override
+    public byte bDescriptorType()
+    {
+        return UsbConst.DESCRIPTOR_TYPE_CONFIGURATION;
+    }
+
+
+    /**
+     * @see UsbConfigurationDescriptor#wTotalLength()
+     */
+
+    @Override
+    public short wTotalLength()
+    {
+        return UsbConst.DESCRIPTOR_MIN_LENGTH_CONFIGURATION + UsbConst.DESCRIPTOR_MIN_LENGTH_INTERFACE;
+    }
+
+
+    /**
+     * @see UsbConfigurationDescriptor#bNumInterfaces()
+     */
+
+    @Override
+    public byte bNumInterfaces()
+    {
+        return 1;
+    }
+
+
+    /**
+     * @see UsbConfigurationDescriptor#bConfigurationValue()
+     */
+
+    @Override
+    public byte bConfigurationValue()
+    {
+        return 1;
+    }
+
+
+    /**
+     * @see UsbConfigurationDescriptor#iConfiguration()
+     */
+
+    @Override
+    public byte iConfiguration()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbConfigurationDescriptor#bmAttributes()
+     */
+
+    @Override
+    public byte bmAttributes()
+    {
+        return (byte) 0x80;
+    }
+
+
+    /**
+     * @see UsbConfigurationDescriptor#bMaxPower()
+     */
+
+    @Override
+    public byte bMaxPower()
+    {
+        return 0;
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbDeviceDescriptor.java b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbDeviceDescriptor.java
new file mode 100644
index 0000000..ea07f43
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbDeviceDescriptor.java
@@ -0,0 +1,173 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import javax.usb.UsbConst;
+import javax.usb.UsbDescriptor;
+import javax.usb.UsbDeviceDescriptor;
+
+
+/**
+ * Virtual USB device descriptor used by the virtual USB root hub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class VirtualUsbDeviceDescriptor implements UsbDeviceDescriptor
+{
+    /**
+     * @see UsbDescriptor#bLength()
+     */
+
+    @Override
+    public byte bLength()
+    {
+        return UsbConst.DESCRIPTOR_MIN_LENGTH_DEVICE;
+    }
+
+
+    /**
+     * @see UsbDescriptor#bDescriptorType()
+     */
+
+    @Override
+    public byte bDescriptorType()
+    {
+        return UsbConst.DESCRIPTOR_TYPE_DEVICE;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bcdUSB()
+     */
+
+    @Override
+    public short bcdUSB()
+    {
+        return 0x101;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bDeviceClass()
+     */
+
+    @Override
+    public byte bDeviceClass()
+    {
+        return UsbConst.HUB_CLASSCODE;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bDeviceSubClass()
+     */
+
+    @Override
+    public byte bDeviceSubClass()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bDeviceProtocol()
+     */
+
+    @Override
+    public byte bDeviceProtocol()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bMaxPacketSize0()
+     */
+
+    @Override
+    public byte bMaxPacketSize0()
+    {
+        return 8;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#idVendor()
+     */
+
+    @Override
+    public short idVendor()
+    {
+        return (short) 0xffff;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#idProduct()
+     */
+
+    @Override
+    public short idProduct()
+    {
+        return (short) 0xffff;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bcdDevice()
+     */
+
+    @Override
+    public short bcdDevice()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#iManufacturer()
+     */
+
+    @Override
+    public byte iManufacturer()
+    {
+        return 1;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#iProduct()
+     */
+
+    @Override
+    public byte iProduct()
+    {
+        return 2;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#iSerialNumber()
+     */
+
+    @Override
+    public byte iSerialNumber()
+    {
+        return 3;
+    }
+
+
+    /**
+     * @see UsbDeviceDescriptor#bNumConfigurations()
+     */
+
+    @Override
+    public byte bNumConfigurations()
+    {
+        return 1;
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbInterface.java b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbInterface.java
new file mode 100644
index 0000000..af8ee20
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbInterface.java
@@ -0,0 +1,246 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import java.io.UnsupportedEncodingException;
+import java.util.ArrayList;
+import java.util.List;
+
+import javax.usb.UsbClaimException;
+import javax.usb.UsbConfiguration;
+import javax.usb.UsbDisconnectedException;
+import javax.usb.UsbEndpoint;
+import javax.usb.UsbException;
+import javax.usb.UsbInterface;
+import javax.usb.UsbInterfaceDescriptor;
+import javax.usb.UsbInterfacePolicy;
+import javax.usb.UsbNotActiveException;
+
+
+/**
+ * The virtual USB interfaces used by the virtual USB root hub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class VirtualUsbInterface implements UsbInterface
+{
+    /** The list of endpoints. */
+    private final List<UsbEndpoint> endpoints = new ArrayList<UsbEndpoint>(0);
+
+    /** The list of alternate settings. */
+    private final List<UsbInterface> settings = new ArrayList<UsbInterface>(0);
+
+    /** The USB configuration. */
+    private final UsbConfiguration configuration;
+
+    /** The interface descriptor. */
+    private final UsbInterfaceDescriptor descriptor = new VirtualUsbInterfaceDescriptor();
+
+
+    /**
+     * Constructor
+     *
+     * @param configuration
+     *            The USB configuration.
+     */
+
+    public VirtualUsbInterface(final UsbConfiguration configuration)
+    {
+        this.configuration = configuration;
+    }
+
+    /**
+     * @see UsbInterface#claim()
+     */
+
+    @Override
+    public void claim() throws UsbClaimException, UsbException,
+        UsbNotActiveException, UsbDisconnectedException
+    {
+        throw new UsbException("Virtual interfaces can't be claimed");
+    }
+
+
+    /**
+     * @see UsbInterface#claim(UsbInterfacePolicy)
+     */
+
+    @Override
+    public void claim(final UsbInterfacePolicy policy)
+        throws UsbClaimException,
+        UsbException, UsbNotActiveException, UsbDisconnectedException
+    {
+        throw new UsbException("Virtual interfaces can't be claimed");
+    }
+
+
+    /**
+     * @see UsbInterface#release()
+     */
+
+    @Override
+    public void release() throws UsbClaimException, UsbException,
+        UsbNotActiveException, UsbDisconnectedException
+    {
+        throw new UsbException("Virtual interfaces can't be released");
+    }
+
+
+    /**
+     * @see UsbInterface#isClaimed()
+     */
+
+    @Override
+    public boolean isClaimed()
+    {
+        return true;
+    }
+
+
+    /**
+     * @see UsbInterface#isActive()
+     */
+
+    @Override
+    public boolean isActive()
+    {
+        return true;
+    }
+
+
+    /**
+     * @see UsbInterface#getNumSettings()
+     */
+
+    @Override
+    public int getNumSettings()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbInterface#getActiveSettingNumber()
+     */
+
+    @Override
+    public byte getActiveSettingNumber() throws UsbNotActiveException
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbInterface#getActiveSetting()
+     */
+
+    @Override
+    public UsbInterface getActiveSetting() throws UsbNotActiveException
+    {
+        return this;
+    }
+
+
+    /**
+     * @see UsbInterface#getSetting(byte)
+     */
+
+    @Override
+    public UsbInterface getSetting(final byte number)
+    {
+        return this;
+    }
+
+
+    /**
+     * @see UsbInterface#containsSetting(byte)
+     */
+
+    @Override
+    public boolean containsSetting(final byte number)
+    {
+        return false;
+    }
+
+
+    /**
+     * @see UsbInterface#getSettings()
+     */
+
+    @Override
+    public List<UsbInterface> getSettings()
+    {
+        return this.settings;
+    }
+
+
+    /**
+     * @see UsbInterface#getUsbEndpoints()
+     */
+
+    @Override
+    public List<UsbEndpoint> getUsbEndpoints()
+    {
+        return this.endpoints;
+    }
+
+
+    /**
+     * @see UsbInterface#getUsbEndpoint(byte)
+     */
+
+    @Override
+    public UsbEndpoint getUsbEndpoint(final byte address)
+    {
+        return null;
+    }
+
+
+    /**
+     * @see UsbInterface#containsUsbEndpoint(byte)
+     */
+
+    @Override
+    public boolean containsUsbEndpoint(final byte address)
+    {
+        return false;
+    }
+
+
+    /**
+     * @see UsbInterface#getUsbConfiguration()
+     */
+
+    @Override
+    public UsbConfiguration getUsbConfiguration()
+    {
+        return this.configuration;
+    }
+
+
+    /**
+     * @see UsbInterface#getUsbInterfaceDescriptor()
+     */
+
+    @Override
+    public UsbInterfaceDescriptor getUsbInterfaceDescriptor()
+    {
+        return this.descriptor;
+    }
+
+
+    /**
+     * @see UsbInterface#getInterfaceString()
+     */
+
+    @Override
+    public String getInterfaceString() throws UsbException,
+        UnsupportedEncodingException, UsbDisconnectedException
+    {
+        return null;
+    }
+}
diff --git a/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbInterfaceDescriptor.java b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbInterfaceDescriptor.java
new file mode 100644
index 0000000..462fd9c
--- /dev/null
+++ b/src/main/java/de/ailis/usb4java/jsr80/VirtualUsbInterfaceDescriptor.java
@@ -0,0 +1,117 @@
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+package de.ailis.usb4java.jsr80;
+
+import javax.usb.UsbConst;
+import javax.usb.UsbDescriptor;
+import javax.usb.UsbInterfaceDescriptor;
+
+
+/**
+ * Virtual USB interface descriptor used by the virtual USB root hub.
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+final class VirtualUsbInterfaceDescriptor implements UsbInterfaceDescriptor
+{
+    /**
+     * @see UsbDescriptor#bLength()
+     */
+
+    @Override
+    public byte bLength()
+    {
+        return UsbConst.DESCRIPTOR_MIN_LENGTH_INTERFACE;
+    }
+
+
+    /**
+     * @see UsbDescriptor#bDescriptorType()
+     */
+
+    @Override
+    public byte bDescriptorType()
+    {
+        return UsbConst.DESCRIPTOR_TYPE_INTERFACE;
+    }
+
+
+    /**
+     * @see UsbInterfaceDescriptor#bInterfaceNumber()
+     */
+
+    @Override
+    public byte bInterfaceNumber()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbInterfaceDescriptor#bAlternateSetting()
+     */
+
+    @Override
+    public byte bAlternateSetting()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbInterfaceDescriptor#bNumEndpoints()
+     */
+
+    @Override
+    public byte bNumEndpoints()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbInterfaceDescriptor#bInterfaceClass()
+     */
+
+    @Override
+    public byte bInterfaceClass()
+    {
+        return UsbConst.HUB_CLASSCODE;
+    }
+
+
+    /**
+     * @see UsbInterfaceDescriptor#bInterfaceSubClass()
+     */
+
+    @Override
+    public byte bInterfaceSubClass()
+    {
+        return 0;
+    }
+
+    /**
+     * @see UsbInterfaceDescriptor#bInterfaceProtocol()
+     */
+
+    @Override
+    public byte bInterfaceProtocol()
+    {
+        return 0;
+    }
+
+
+    /**
+     * @see UsbInterfaceDescriptor#iInterface()
+     */
+
+    @Override
+    public byte iInterface()
+    {
+        return 0;
+    }
+}
diff --git a/src/test/java/Test.java b/src/test/java/Test.java
new file mode 100644
index 0000000..d23a3df
--- /dev/null
+++ b/src/test/java/Test.java
@@ -0,0 +1,52 @@
+import java.util.List;
+
+import javax.usb.UsbDevice;
+import javax.usb.UsbHostManager;
+import javax.usb.UsbHub;
+import javax.usb.UsbPort;
+import javax.usb.UsbServices;
+
+/*
+ * Copyright (C) 2011 Klaus Reimer <k@ailis.de>
+ * See LICENSE.txt for licensing information.
+ */
+
+
+/**
+ * Test
+ *
+ * @author Klaus Reimer (k@ailis.de)
+ */
+
+public class Test
+{
+    public static void dumpHub(final UsbHub rootHub, final String indent) throws Exception
+    {
+        final List<UsbPort> ports = rootHub.getUsbPorts();
+        for (final UsbPort port: ports)
+        {
+            System.out.print(indent);
+            System.out.format(" \\__%d: ", port.getPortNumber());
+            if (port.isUsbDeviceAttached())
+            {
+                final UsbDevice device = port.getUsbDevice();
+                System.out.println(device.getProductString());
+                if (device.isUsbHub())
+                {
+                    final UsbHub hub = (UsbHub) device;
+                    dumpHub(hub, indent + "    ");
+                }
+            }
+            else System.out.println("No device attached");
+        }
+    }
+
+    public static void main(final String[] args) throws Exception
+    {
+        final UsbServices services = UsbHostManager.getUsbServices();
+        final UsbHub rootHub = services.getRootUsbHub();
+        System.out.println(rootHub.getProductString());
+        dumpHub(rootHub, "");
+    }
+}
+
diff --git a/src/test/resources/javax.usb.properties b/src/test/resources/javax.usb.properties
new file mode 100644
index 0000000..e357bef
--- /dev/null
+++ b/src/test/resources/javax.usb.properties
@@ -0,0 +1 @@
+javax.usb.services = de.ailis.usb4java.jsr80.UsbServicesImpl