Vittorio,
Thanks for your response.
server 1:
model 5RY
ram - slot 1: 128mb ram, pc133 with ibm sticker on it.
slot 2: 1GB pc133, aftermarket.
Bios version 11
server 2:
model 4RY
ram - slot 1: 128mb ram, with ibm sticker on it.
slot 2: 512mb, aftermarket, pc133
slot 3: 512mb, aftermarket...