Support Information:
Device Type: BIOS / Motherboard
Manufacturer: ECS
Model: 945GCT-HM
Interface: USB
Operating System: Windows XP Professional
Age of Device: Not specified
FCCID:

Find it on DriverGuide (http://members.driverguide.com/index.php?action=srch&sm=b&aax=&qa6=&qa5=1&qa7=1500&dp=3&qm0=945GCT-HM&jmd=and&fzz=d) | Find it with Google (http://www.google.com/search?hl=en&lr=&ie=UTF-8&oe=UTF-8&q=ECS+BIOS+%2F+Motherboard+ECS+945GCT-HM+Windows+XP+Professional+)

Is this a retail motherboard or did it come installed in a HP or Compaq machine?

HP and Compaq used it in some of their machines: ie: http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00910113&lc=en&cc=us&dlc=en&product=3377251%E3%80%88=en
and
http://h10025.www1.hp.com/ewfrf/wc/document?docname=c00910113&lc=en&cc=us&dlc=en&product=3377251&lang=en

It's known as the Livermore - GL6 mb. socket 775.

Note: HP/Compaq only shipped this motherboard in systems with Windows Vista installed. No XP drivers exist that I'm aware of unless you can get XP drivers from the respective chipset companies.