512MB STICK For Gateway M Series M325X M460 M460A M460B M460E M460E Plus M460Eb M460ES M460ESB M460G M460GS M460QS M460S M460Sb M460S-QS M460X M460XB M460XL M460XLb M460XL-QS M460X-QS M465-E M465-E 1008637 M465-E SB M465-E SBb M465-EB M465-G M-6305 2905949R M-6307 2905965R M-6308 2905980R M-6309 1015231R M-6312 1015133R M-6315 2906016R M-6316 2906015R M-6317 2906014R. SO-DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory. Genuine A-Tech Brand. 512MB STICK SO-DIMM DDR2 NON-ECC PC2-4200 533MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Gateway M Series. (See Compatibility List Below)