2GB STICK For HP-Compaq HP Pavilion Desktop P6600z P6601cn P6601fr P6603es P6604f P6604y P6605cn P6605cx P6605f P6605in P6605ru P6606cn P6606f P6606uk P6608cn P6608f P6609cx P6609it P6610ch P6610f P6610fr P6610in P6610it P6610me P6610pl P6610t P6610y P6611de P6611es P6611fr P6611me P6611pl P6612de P6612es P6612fr P6612it P6612p P6613cn P6613de P6613es P6613fr P6614de P6614f P6614it. DIMM DDR3 NON-ECC PC3-10600 1333MHz RAM Memory. Genuine A-Tech Brand. 2GB STICK DIMM DDR3 NON-ECC PC3-10600 1333MHz 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)