Amazon.com: Western Digital 4TB WD Blue SA510 SATA Internal Solid State Drive SSD - SATA III 6 Gb/s, 2.5"/7mm, Up to 560 MB/s - WDS400T3B0A : Electronics
4 TB SATA Western Digital WD40EZRZ-00GXCB0 5400rpm 64MB HDD 3,5 " Hard Drive New | eBay
Crucial MX500 4TB 3D NAND SATA 2.5-inch 7mm (with 9.5mm adapter) Internal SSD | CT4000MX500SSD1 | Crucial.com
Hard Drive Seagate Skyhawk 4TB 5900U/Min 64MB SATA III ST4000VX005 3.5'' Inch | eBay