Hard Drives
			
            
			WD Blue 500 GB internal mobile hard drive (6mm height 5400rpm SATA 6Gb/s 8MB cache 6.4 cm 2.5 inches) RoHS compliant internal
			WD blue storage is tested and recommended for use in desktop and all-in-one PCs, notebooks and external enclosures Desktop/consumer RAID environments - WD blue PC hard drives are tested and recommended for use in consumer-type RAID applications...                
			https://www.bizrate.co.uk/harddrives/wd-blue-500-gb-internal-oid6611368459.html