93P3781 - IBM / Lenovo (Motherboard) for ThinkPad R51 93P3781 - IBM / Lenovo (Motherboard) for ThinkPad R51 $286.78
39T5505 - IBM / Lenovo (Motherboard) for ThinkPad R51 39T5505 - IBM / Lenovo (Motherboard) for ThinkPad R51 $295.72
93P4201 - IBM / Lenovo (Motherboard) for ThinkPad R50 / R51 93P4201 - IBM / Lenovo (Motherboard) for ThinkPad R50 / R51 $154.15
39T5504 - IBM Lenovo (Motherboard) for ThinkPad R51 Series 39T5504 - IBM Lenovo (Motherboard) for ThinkPad R51 Series $121.34