It's for a pretty old PC

I could get no information from MSI-Microsystem website (motherboard).
The motherboard number is PCIP54CTR4.
On the bios, i can read : PCI/PNP 586 then S/N : 051378873 V.
I don't know if the upgrade id still available, but thanks for everything.
copppppppppp@hotmail.com (10 "p")