It is from a Compaq SR2150NX computer.
There are some drivers at www.compaq.com
I found that the southbridge drivers from ATI worked better than those at Compaq. If you get the Catalyst Control Center.
Check your OS then, select "integrate / motherboard", then select "Radeon Express 1100". The Catalyst Software Suite contains the video, chipset, ide, and sata drivers in one package.
Also ECS has some drivers at:
Try the motherboard model numbers that begin with "RC"
Any other problems: firstname.lastname@example.org
I spent about 8 hours messing with this Compaq computer with Vista Home installed on it (puke). So, I thought I would help you save some time