A-Tech 4GB KIT 2 x 2GB HP Compaq HP Pavilion Desktop A6718uk MS206CN MS208CN MS210BR MS210JP MS210KR MS210LA MS211D MS211JP MS212 MS212A MS212BR MS212l SO-DIMM DDR2 NON-ECC PC2-6400 800MHz RAM Memory 4GB KIT (2 x 2GB) SO-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 HP-Compaq HP Pavilion Desktop. (See Compatibility List Below)