Brand: CORSAIR, Series: ValueSelect, Model: CMSO4GX3M1C1600C11, Capacity: 4GB, Type : 204-Pin DDR3 SO-DIMM, Speed : DDR3L 1600 (PC3L 12800), CAS Latency : 11, Timing : 11-11-11-28, Voltage : 1.35V, Heat Spreader: No ValueSelect memory is tested to Corsair's tough standards and is stable, reliable, and compatible with virtually all major notebook and netbook PCs.