A-TECH 2GB KIT (2 x 1GB) For Dell Optiplex GX260 GX60 L60 SX260. DIMM DDR NON-ECC PC2100 266MHz RAM Memory. Genuine Brand. 2GB KIT (2 x 1GB) DIMM DDR NON-ECC PC2100 266MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Optiplex. (See Compatibility List Below)