This Samsung DDR2-667 PC2-5300P ECC Memory, model M393T5750GZA-CE6Q0, is compatible with HP 405476-051 and is a great addition to your server memory. With a total capacity of 2GB, this memory features ECC memory that ensures data integrity and reliability. The memory's form factor is DIMM, and it consists of one module. The capacity per module is 2GB and has a bus speed of PC2-5300 (DDR2-667). This DDR2 SDRAM memory type has 240 pins, making it easy to install. It's perfect for your enterprise networking, servers, and computer/tablet networking needs. Get this unit type memory today and improve your server's performance.