AA633A I New Sealed HP 512MB DDR SDRAM Memory Module 266MHz DDR266/PC2100 ECCTechnical Information Memory Size 512 MB Memory Technology DDR SDRAM Number of Modules 1 x 512 MB Memory Speed 266 MHz Memory Standard DDR266 PC2100 Error Checking ECC Signal Processing Unbuffered Physical Characteristics Number of Pins 184 pin Miscellaneous Compatibility Hewlett Packard Workstation(s) xw4000 Hewlett Packard Workstation(s) xw5000 We ship all products according to manufacturer specifications. If the manufacturer does not include an