8GB KIT (4 x 2GB) For Gateway E Server Series E-9415R E-9515R. DIMM DDR2 ECC Registered PC2-3200 400MHz Single Rank RAM Memory. Genuine A-Tech Brand. 8GB KIT (4 x 2GB) DIMM DDR2 ECC Registered PC2-3200 400MHz Single Rank RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Gateway E Server Series. (See Compatibility List Below)