45R5316 IBM Lenovo System Board (Motherboard) for ThinkCentre M57 M57p (Refurbished)
Refurbished: Lenovo ThinkCentre M57p (9071) Ultra-Small Form Factor Desktop Intel Core 2 Duo 2.33GHz 2GB DDR2 RAM 250GB HD DVD/CD-RW Microsoft Windows 7 Home Premium - Newegg.com
High Quality Desktop Motherboard For Lenovo M8050 M6900 Q35 M57 M57p L-iq35 M8050 Fully Tested - Motherboards - AliExpress
46R8635 FOR LENOVO ThinkCentre M57 M57P MOTHERBOARD 45R4852 | eBay