Black Seagate Backup Plus Portable 4TB Hard Drive, Model Name/Number: STHP4000400
Seagate 4TB Expansion Portable Hard Drive STEA4000400
Seagate Expansion 4TB External HDD - USB 3.0 for Windows and Mac & Barracuda 2.5 Inches (6.3 cm) SATA 6 Gb/s 5400 RPM 128MB Cache 2TB Internal Hard Drive HDD for PC Laptop : Amazon.in: Electronics
Seagate Expansion Portable 4TB Hard Drive - JB Hi-Fi