Technical Information Memory Size 4 GB Memory Technology DDR2 SDRAM Number of Modules 2 x 2 GB Memory Speed 533 MHz Memory Standard DDR2-533/PC2-4200 Error Checking ECC Signal Processing Registered CAS Latency CL4 Physical Characteristics Number of Pins 240-pin Form Factor DIMMListing may include stock images, please contact us for confirmed photos of our inventory. 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 you are have questions regarding what is included with a product, please contact us.