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 2pcs. 1GB 184pin PC3200 DDR400 DDR DIMM. Compatible with eMachines W3115, W3118, W3400, W3410, W3502, W3503 Maximum Memory 2GB Memory Slots 2 (2 banks of 1) Guaranteed to work in your computer or you get your money back