VisionTek 4GB DDR3L Low Voltage 1600 MHz (PC3-12800) CL11 SODIMM - Notebook - 4 GB (1 x 4 GB) - DDR3 SDRAM - 1600 MHz DDR3-1600/PC3-12800 - 1.35 V - Non-ECC - Unbuffered - 204-pin - SoDIMM 900641