Index: /trunk/src/VBox/Main/src-server/HostUSBDeviceImpl.cpp
===================================================================
--- /trunk/src/VBox/Main/src-server/HostUSBDeviceImpl.cpp	(revision 60711)
+++ /trunk/src/VBox/Main/src-server/HostUSBDeviceImpl.cpp	(revision 60712)
@@ -1052,9 +1052,15 @@
     /* The hub/bus + port should help a lot in a re-attach situation. */
 #ifdef RT_OS_WINDOWS
-    iDiff = strcmp(aDev1->pszHubName, aDev2->pszHubName);
-    if (iDiff)
-    {
-        //Log3(("compare: HubName: %s != %s\n", aDev1->pszHubName, aDev2->pszHubName));
-        return iDiff;
+    /* The hub name makes only sense for the host backend. */
+    if (   !strcmp(aDev1->pszBackend, "host")
+        && aDev1->pszHubName
+        && aDev2->pszHubName)
+    {
+        iDiff = strcmp(aDev1->pszHubName, aDev2->pszHubName);
+        if (iDiff)
+        {
+            //Log3(("compare: HubName: %s != %s\n", aDev1->pszHubName, aDev2->pszHubName));
+            return iDiff;
+        }
     }
 #else