The MemoryMasters ATMS378019B15744X1 memory RAM module was specifically engineered to be compatible with the HP Compaq CQ2804ES. Included in the package is a Genuine MemoryMasters Brand 2GB Single DDR3L PC3L-12800 2rx8 1.35v Non-ECC Memory Stick (240-pin DIMM 1600MHz) upgrade. Additional Details ------------------------------ Package quantity: 1