Samsung 8GB Dual Channel Kit (2x 4GB, 204 pin, DDR3-1066, PC3-8500 SO-DIMM) (Electronics)
Corresponds to the memory, the original is obstructed by Apple. In my case, however, instead of 2GB 4GB per bar. Installation problems in the MacBook Pro 13 "and, moreover, extremely cheap. So far, no abnormalities in everyday use.