MicroMemory 1GB DDR 3200 SO-DIMM 64Mx8. Internal memory: 1024 MB, Internal memory type: DDR, Memory clock speed: 400 MHz. Memory voltage: 2.6 V. Compatibility: - Clevo MOBINOTE: M540J, M540V, M551V, M555V - MSI MEGABOOK: L715, L720, L725, M645, S260