The "PR" in the bios id string translates to a mb built by "Super Grace Electronics"
The "6A664" portion of the bios id string translates to a motherboard containing the "North Bridge ATi R9100 Pro IGP Chipset".
A full bios id string will resemble this: 03/16/2004-RS300-SB200-6A664PR8C-00
"Super Grace" seems to have bought out "VTech/PCPartner".
I'm not sure that this company still exists. And I suspect the word "sapphire" originates from a mb. series name like "Sapphire Axion".
That's basically all I can tell you about the board. Perhaps this program will help:
To find make and model of pc hardware, EVEREST Home Edition
is a free system diagnostics, system information program that will id most hardware onboard a mb. as well as the actual motherboard. It will, in some cases, actually provide a download link for the driver.
Alternate Everest download link: (offers 2 sites to dl program from)
Run the program and then:
Click on Computer
Click on Summary
Right hand window (hardware) if the text is BLUE
this is a link to the web site for that particular hardware.
If you have additional questions or need further help, please post a "copy and paste" of the COMPUTER SUMMARY report (Leave out the Debug–PCI section) from Everest.
You might also be able to find more on these sites: