WD Blue 3D NAND 250GB PC SSD - SATA III 6 Gb/s 2.5"/7mm Solid State Drive - 550 MB/s Maximum Read Transfer Rate - 525 MB/s Maximum Write Transfer Rate

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.