1pc of 8GB PC3-12800 CL11 16c 256×8 DDR3-1600 204pin SODIMM. Lifetime exchange or repair warranty against manufacturing defects. by Computer Memory Solutions Brand Computer Memory Solutions We don’t use Generic module to avoid incompatibility. Guaranteed to work in your notebook or you get your money back. Compatible with: Lenovo ThinkCentre Edge 62z All-In-One Desktop/PC. Maximum Memory: 16 GB SOCKETS: 2 MODULES MUST BE ORDERED AND INSTALLED IN PAIRS for Dual Channel mode, if supported. If 4GB is installed, the recognized memory may be reduced to 3.5GB or less (depending on system configuration and memory allocation). Maximum configurations require a 64-bit operating system.