4GB DDR3L Low Voltage 1600 MHz (PC3-12800) CL11 SODIMM - Notebook VisionTek 4GB DDR3 SDRAM Memory Module:1600MHz DDR3 204-pin SODIMM architectureMatches exact Laptop/Ultrabook specifications1.35 voltsLow power requirements offer operating cost savings and lower heat outputFully JEDEC compliant: meets the industry standards set by the semiconductor industry for memory technologyLimited lifetime warranty: buy with peace of mind confidence knowing you're covered4GB memory model helps the computer to process large amounts of dataEasy to installCheck owner's manual for compatibility