2pcs of 4GB 1333MHz DDR3 Non-ECC CL9 SO DIMM. Manufactured by CMS We don't use Generic Modules to avoid incompatibility. Lifetime warranty 30 day money back guarantee.
Max Memory: 8
GB Sockets: 2 Sockets Max memory per socket is 4gb
Compatible with: ASUS/ASmobile B43 Series B43F Notebook ASUS/ASmobile B43 Series B43J 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.