Memory DDR2 RAM 1GB 800Mhz 

1Rx8 PC2-6400U-666-13-ZZ 

Micron MT8HTF12864AZ-800H1

Product description

Brand: Micron
Model: MT8HTF12864AZ-800H1 
HP 800MHz DDR2 Memory Module
HP P/N: 404574-888
Capacity: 1GB 
Type: DDR2 PC2-6400
Shipped Anti-Static Bagged

Condition Note: Pre Owned.  Purchased new in a HP desktop and it works fine.  I needed to expand memory. Used & Tested In Good Working