1pc of 4GB PC3-10600 CL9 16c 256x8 DDR3-1333 204pin SODIMM. Lifetime exchange or repair warranty against manufacturing defects. We don't use Generic module to avoid incompatibility. Guaranteed to work in your notebook or you get your money back.
Compatible with: Samsung Series 9 Notebook NP900X3A NP900X3A-A01AU; NP900X3A-A01US; NP900X3A-A02US, NP900X3A-A03AU, NP900X3A-B03
Maximum
Memory: 4GB using a 32-bit Operating System 8GB using a 64-bit
Operating System SOCKETS: 2 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.