Help with PCB

Hello all,

I'm in need of help tolocate the right socket for a bios chip. I have a 4-slot board without a bios chip. I was going to take the bios out of my 2-slot and put in the 4. However there are 3 empty sockets on the 4-slot, and I need to know which socket is the right one.
Thanks Mike

It's the one marked SP1

Thanks very much for the reply I'll give it a try.