ASUS/ASmobile is a copy-write of Asus Corporation 2pcs of 4GB 1333MHz DDR3 Non-ECC CL9 SO DIMM. 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.
Sockets: 4 Sockets with Quad Core CPU 2 Sockets with Dual Core CPU Max memory per socket is 4gb
Compatible with: ASUS/ASmobile B53 Series B53S, B53V Notebook ASUS/ASmobile B53 Series B53F Notebook 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.