2pcs of 8GB PC3-12800, DDR3 1600mhz CL11 16c 256x8 204-pin SDRAM SODIMM. Lifetime exchange or repair warranty against manufacturing defects. by Computer Memory Solutions Brand Computer Memory Solutions 30 DAY MONEY BACK GUARANTEE Memory Choices for this notebook 4GB DDR3 System Memory (1 Dimm) 8GB DDR3 System Memory (2 Dimm) Compatible with: Toshiba Satellite c55d-a5362, C55D-A5382, C55D-A5392 Max memory 16GB Sockets 2