IBM Thinkpad R51 Motherboard replacement

[thinkpads3232]

I have IBM r51 2888 model laptop with failure motherboard. I want to replace entire motherboard. I tried searching ebay for compatable motherboards. I have found motherboards with different FRu's 39T5510,93p4201. My laptop currently having motheboard model FRU-93p4202. Wats is the difference between 39T5510 & 93p4201 & 93p4202. Please suggest suitable one for my laptop.

[Harryc]

I'd stick with an Intel board like you have. 93P4201 has 10/100 Ethernet and no firewire. 93P4202 has Gigabit Ethernet. 27K9925 has 10/100 Ethernet and no firewire. 39T5510 has 10/100 Ethernet. All are compatible.