A-TECH 2GB STICK For Dell Vostro 220 Mini Tower 220s Slim Tower 320 A180 Tower. DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory. Genuine Brand. 2GB STICK DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory Genuine A-Tech Memory Lifetime Warranty Toll Free Technical Support 1-866-557-4527 Designed For Dell Vostro. (See Compatibility List Below)