1PCS Of 4GB PC3-10600 DDR3-1333 CL9 16c 256x8 204-pin SDRAM SODIMM. Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS Compatible with: Toshiba Satellite C855D-SP5265FM, C855D-SP5368SM Max memory 16GB Sockets 2