4GB KIT (2 x 2GB) For HP-Compaq HP Pavilion Desktop P6244ch P6244fr P6245d P6245fr P6245sc P6250jp P6250kr P6250sc P6255d P6255kr P6260kr P6270jp P6270z P6272l P6275l P6277c P6280a P6280d P6282l P6283l P6285l P6290d P6290jp P6300be P6300es P6300it P6301cx P6301sc P6302it P6303de P6305cx P6305sc P6306sc P6307it P6309it P6310be P6310ch P6310in P6310la P6310t P6311cx P6311ru P6312de. DIMM DDR3 NON-ECC PC3-8500 1066MHz RAM Memory. Genuine A-Tech Brand. 4GB KIT (2 x 2GB) DIMM DDR3 NON-ECC PC3-8500 1066MHz 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)