G.SKILL 4G 204-Pin DDR3 SO-DIMM DDR3 1333 (PC3 10600) Model F3-10600CL9S-4GBSQ Memory (Notebook Memory) - Retail 204-Pin DDR3 SO-DIMM Unbuffered No ECC, Voltage 1.5V, Timing 9-9-9-24, Cas Latency 9 Speed DDR3 1333 (PC3 10600) Capacity4G