Hi,

I bought this card recently with a slot1 PIII 500Mhz. As I didn't found lot of info for this Motherboard or posts here, I'm posting my experience 😀
So I put a slot1 PIII 850 and it was not correctly recognized ( but working fine )
Seems Matsonic was not using bios revision number, just the date of the release... I flashed a newer Bios and now the CPU is correctly recognized. For some reason I can briefly see a "Unknown Flash Type" when the computer starts, but no issues to report.

Attached file below :
The Bios I had : 10/25/99 ( Checksum 0B4DH ) - Filename Old.BIN
The Bios I flashed : 06/30/00 ( Checksum CB9EH ) - Filename 06302k.BIN
Had to use Awdflash 6.6
Also attached the manual