FOR S145-15API / S440 / GS540 NM-C511 Laptop Motherboard with R3-3200U / R5-3500U / R7-3700U and 4G DDR4

Replacement laptop motherboard compatible with S145-15API, S440 and GS540 models. Board model NM-C511 (also referenced as NMC511) offered with your choice of AMD mobile processors: R3-3200U, R5-3500U or R7-3700U. Includes 4G DDR4 RAM installed. Ideal for repairing or upgrading the specified Lenovo laptops while retaining the original motherboard specifications.