its bios number is :
07/29/96/-umc-890b-2a5x8pc9c-00
PT-733A: 07/29/96/-umc-890b-2a5x8pc9c-00
This is all that the mobo manufacturer offers:
http://www.pine-support.com/scripts/lis ... T-733a.htm
http://www.pine-support.com/scripts/lis ... T-733a.htm