For M90P / M90 IQ57N BTX Motherboard — 1156-Pin (71Y5975)

Replacement motherboard compatible with M90 and M90P systems. Model IQ57N in BTX form factor with a 1156-pin socket. Identified by part number 71Y5975. Ideal for repairing or restoring systems that require this exact board—please verify model compatibility prior to purchase.