G.Skill F2-6400CL6S-4GBSQ SQ Series SO-DIMM DDR2 RAM G.Skill 4GB (1x4GB) Single 800Mhz CL6 1.8V

Brand - G.Skill, Size - 4GB (1x4GB), Channel - Single, Speed - 800Mhz, Latency - CL6, Voltage - 1.8V, Timing - 6-6-6-18