Avolusion HDDGear 4TB USB 3.0 External Gaming Hard Drive (for XBOX ONE, XBOX ONE S, XBOX ONE X) - 2 Year Warranty
WD My Book External Desktop Hard Drive Storage 4 TB - 22 TB | Western Digital
Amazon.com: Seagate 4 TB Expansion Amazon Special Edition USB 3.0 Portable External Hard Drive for PC, Xbox One and Playstation 4 (STGX4000400) : Electronics
Amazon.com: Seagate Backup Plus Hub 4TB External Hard Drive Desktop HDD – USB 3.0, for Computer Desktop Workstation PC Laptop Mac, 2 USB Ports, 2 Months Adobe CC Photography (STEL4000100), Model:STEL4000100 : Electronics
Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics
WD (WDBPKJ0040BBK-0A) My Passport 4TB USB 3.0 External Hard Drive - Black New | eBay
4tb Metal USB 3.0 Flash Drive Memory Stick High Speed Pendrive Keychain Gift | eBay
Seagate 4TB Expansion Portable Hard Drive STEA4000400
Seagate LaCie Mobile Drive 4TB USB 3.1 External Portable Hard Drive - STHG4000402 - External Hard Drives - CDW.com
SanDisk working on 4TB flash drive
Amazon.com: Seagate Portable 4TB External Hard Drive HDD – USB 3.0 for PC, Mac, Xbox, & PlayStation - 1-Year Rescue Service (STGX4000400) : Electronics
SanDisk's prototype 4TB flash drive fits in your pocket | TechSpot