This is a White Label 320GB SATA hard drive featuring with 7200RPM, 8MB cache hard drive with 1 year warranty. A white label product is a product made by major hard drive company that manufactured for other companies (OEM Hard Drive Reseller/VAR) re-brand to make it appear as if they made it or for large volume special application. This 3.5" SATA internal hard drive is fully compatible with any CCTV, DVR, NAS, External Enclosure, PC/Mac Desktop Computer with SATA interface.