Seagate 4TB External Game Drive for PlayStation 4 | GameStop
Turns out all you need to upgrade a PS4 to 4TB internal Storage is a Dremel and a 3D Printer : r/PS4
PS4 Pro Hard Drive 4TB Upgrade Kit - DongCoh Game Bar for PlayStation 4 Pro with 3.5-Inch 4 TB Brand HDD | Amazon price tracker / tracking, Amazon price history charts, Amazon
WD 4TB My Passport USB 3.0 External Hard Drive
Seagate Game Drive 2TB/4TB USB 3.0 for PS4 Portable External HDD Gaming Hard Drive | Lazada PH