I'm having some trouble with one device in my M4800 laptop: the Broadcom USH (Dell ControlVault) is reporting as a misconfigured USB1.1 device on the 'History' tab of the SupportAssist utility and on the Troubleshooting tab if I test USB ports - even though on the main testing screen it is showing that there are no problems with the system, and in the device manager, it says this device is functioning normally. I have installed the latest firmware and the driver for this particular machine and Windows variant (8.1) but cannot cure this problem. Can anyone advise?