Eluktro Pro Performance 4GB RAM (4GB x 1 dimm) DDR3/DDR3L 1600 MHz (PC3-12800) CL9 SODIMM 204-Pin 1.35V/1.5V Memory for Laptops Plug and play quality components produced in the USA backed with a LIFETIME Warranty! 1 x 4GB module of 1600MHz DDR3L Memory for Laptops, Notebooks, Netbooks & Ultrabooks CL 9 SODIMM Timing 9-9-9-28, 204-pin, PC3-12800, 12.8GB bandwidth per channel 1.35 low voltage for latest generation technology, backwards compatible with 1.5 voltage Rigorously tested, unparalleled reliability & stability, meets or exceeds JEDEC Standards