RJ606AV - HP - 4GB (2 x 2GB) DDR2-667MHz non-ECC Unbuffered CL5 200-Pin SODIMM 1.8V Memory Module RJ606AV - HP - 4GB (2 x 2GB) DDR2-667MHz non-ECC Unbuffered CL5 200-Pin SODIMM 1.8V Memory Module $147.70 $125.17