HP 16GB 240-Pin DDR3 SDRAM Registered DDR3 1066 (PC3 8500) System Specific Memory Model 500666-B21-RF

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.