Crucial CT25664BA1339 2GB 240-PIN PC3-10600 DIMM DDR3 Memory Module Module Size - 2GB Package - 240-pin DIMM Feature - DDR3 PC3-10600 Specs - DDR3 PC3-10600, CL=9, Unbuffered, NON-ECC, DDR3-1333, 1.5V, 256Meg x 64