Brand: CORSAIR, Model: CMSA16GX3M2A1600C11, Type : 204-Pin DDR3 SO-DIMM, Compatibility: For Apple MacBook, MacBook Pro & iMac, Capacity: 16GB (2 x 8GB), Speed : DDR3 1600 (PC3 12800), CAS Latency : 11, Timing : 11-11-11-30, Voltage : 1.35V, Multi-channel Kit : Dual Channel kit CORSAIR's 4GB, 8GB, and 16GB Mac memory upgrade kits will help your system work better. With hassle-free compatibility and renowned CORSAIR reliability and support, they're a smart performance investment.