WD Elements 4TB Portable External USB 3.0 Hard Drive/HDD PC/MAC LN115914 - WDBU6Y0040BBK-WESN | SCAN UK
LaCie 4TB Rugged USB-C Portable Hard Drive - Apple (UK)
Seagate Portable Drive, 4TB, External Hard Drive, Dark Grey, for PC Laptop and Mac, 2 year Rescue Services, Amazon Exclusive (STGX4000400) : Amazon.co.uk: Computers & Accessories
Toshiba P300 4TB 128MB 6.0 Gb/s SATA III PC Internal Hard Drive - HDWD240UZSVA
Western Digital Green WD40EZRX 4TB Internal SATA 3.5inch HardDrive : Amazon.co.uk: Computers & Accessories
Dell 4TB 5.4K RPM SATA 512e 3.5in Hard Drive | Dell UK