M18x R2 Windows 8 "Unknown Device"

Hello all, I have a Alienware M18x R2 that is displaying an "unknown Device" in Device Manager.

Here are the specs:

i7 3920

32GB 1600Mhz RAM

2 x GTX 680's

2 x 1TB Western Digital 5400RPM HDD's

1 x 60GB OCZ mSATA HDD

Bluetooth 380

Killer WiFi

Win 8 Pro 64Bit

BIOS version is A09

This particular "Unknown Device" does not appear with a Windows 7 O/S

If I use Windows 7 and install all the recommended drivers there is no problems, the "Unknown Device" in question does not even appear with Windows 7 running, I have done a clean install of windows 7 and checked every device ID in device manager before installing anything else to see if I could find the one causing the problems in Windows 8 - It is no where to be found

 

As soon as I Install Windows 8 and check the device manager, then this particular "Unknown Device" appears again, even after installing all Windows 8 recommened drivers it is the only "unknown" left.

I have tried searching the internet using the Hardware Vendor ID and Device ID provided in the details section of the "Unknown Device" but cannot find one useful entry, even using the Vendor and hardware databases has been a waste of time

 

Here is the Device hardware ID as it appears, three lines in total, but I think only the top one is relevent.

 

ACPI\VEN_DELL&DEV_ABCE

ACPI\DELLABCE

*DELLABCE

 

Any help would be great.

Cheers