647895-S21 I GENUINE HP 4GB DDR3 SDRAM Memory Module 647895-B21 BRAND NEWTechnical Information Memory Size 4 GB Memory Technology DDR3 SDRAM Memory Speed 1333 MHz Memory Standard DDR3 1333 PC3 10600 Error Checking ECC Signal Processing Registered Physical Characteristics Number of Pins 240 pin Form Factor DIMM We ship all products according to manufacturer specifications. If the manufacturer does not include an option as standard with the product (power supply, fan tray etc) we do not either unless specifically stated. If