MEMORY, CT8HTF6464AY-53ED9 512MB 1RX8 PC2-4200U-444-12-ZZ 512MB, DDR2, 533, CL4, CT6464AA53E.8FD

This means the product was tested and repaired as required to meet the standards of the refurbisher, which may or may not be the original manufacturer. Any exceptions to the condition of the item outside the manufacturer’s information should be provided in the listing, up to and including warranty details.