Index: /trunk/include/VBox/RemoteDesktop/VRDE.h
===================================================================
--- /trunk/include/VBox/RemoteDesktop/VRDE.h	(revision 38906)
+++ /trunk/include/VBox/RemoteDesktop/VRDE.h	(revision 38907)
@@ -439,4 +439,11 @@
 } VRDEUSBDEVICEDESC;
 
+#define VRDE_USBDEVICESPEED_UNKNOWN    0 /* Unknown. */
+#define VRDE_USBDEVICESPEED_LOW        1 /* Low speed (1.5 Mbit/s). */
+#define VRDE_USBDEVICESPEED_FULL       2 /* Full speed (12 Mbit/s). */
+#define VRDE_USBDEVICESPEED_HIGH       3 /* High speed (480 Mbit/s). */
+#define VRDE_USBDEVICESPEED_VARIABLE   4 /* Variable speed - USB 2.5 / wireless. */
+#define VRDE_USBDEVICESPEED_SUPERSPEED 5 /* Super Speed - USB 3.0 */
+
 typedef struct _VRDEUSBDEVICEDESCEXT
 {
@@ -446,7 +453,6 @@
      */
 
-    /** Version of the physical USB port the device is connected to. */
-    uint16_t        bcdPortVersion;
-
+    /** The USB device speed: VRDE_USBDEVICESPEED_*. */
+    uint16_t        u16DeviceSpeed;
 } VRDEUSBDEVICEDESCEXT;