1PC OF 1GB PC5300 667MHz DDR2 Non-ECC CL5 SODIMM 16CHIPS Genuine CMS brand, CMS is one of the most trusted names in the Computer Memory industry and this product carries a Lifetime Warranty from CMS Compatible with Gateway M Series MT3305j, MT3421, MT3422, MT3423, MT3707 Maximum Memory: 2 GB Expansion: 2 Socket(s)