![WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch : Amazon.co.uk: Computers & Accessories WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch : Amazon.co.uk: Computers & Accessories](https://m.media-amazon.com/images/S/aplus-media/mg/3d652c16-6bd1-4f5d-a9a4-9830d8ba09e9._SL300__.jpg)
WD Black 4TB Performance Desktop Hard Disk Drive - 7200 RPM SATA 6 Gb/s 64MB Cache 3.5 Inch : Amazon.co.uk: Computers & Accessories
![WD_BLACK 8TB Performance 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 128MB Cache, 5 Year Warranty WD_BLACK 8TB Performance 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 128MB Cache, 5 Year Warranty](https://m.media-amazon.com/images/I/51LCrwIQpaL.jpg)
WD_BLACK 8TB Performance 3.5" Internal Hard Drive - 7200 RPM Class, SATA 6 Gb/s, 128MB Cache, 5 Year Warranty
![WD_BLACK 4TB High Performance 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 256MB Cache, 5 Year Warranty : Amazon.co.uk: Computers & Accessories WD_BLACK 4TB High Performance 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 256MB Cache, 5 Year Warranty : Amazon.co.uk: Computers & Accessories](https://m.media-amazon.com/images/I/81Ged4XkUqL._AC_UF1000,1000_QL80_.jpg)
WD_BLACK 4TB High Performance 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 256MB Cache, 5 Year Warranty : Amazon.co.uk: Computers & Accessories
![WD_BLACK 4TB High Performance 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 256MB Cache, 5 Year Warranty : Amazon.co.uk: Computers & Accessories WD_BLACK 4TB High Performance 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 256MB Cache, 5 Year Warranty : Amazon.co.uk: Computers & Accessories](https://m.media-amazon.com/images/I/714xDSJWrkL._AC_UF1000,1000_QL80_.jpg)
WD_BLACK 4TB High Performance 3.5" Internal Hard Drive, 7200 RPM Class, SATA 6 GB/s, 256MB Cache, 5 Year Warranty : Amazon.co.uk: Computers & Accessories
![Western Digital WD4005FZBX Black 4TB 7200RPM SATA 6Gb/s 256MB Cache 3.5" Internal Hard Drive - Wootware Western Digital WD4005FZBX Black 4TB 7200RPM SATA 6Gb/s 256MB Cache 3.5" Internal Hard Drive - Wootware](https://www.wootware.co.za/media/catalog/product/cache/1/image/9df78eab33525d08d6e5fb8d27136e95/7/1/71mtg8j-ccl._sl1500__1_2.jpg)