SanDisk, WD, WD_Black brands ramp up portable SSD to 4TB - SlashGear
Buy VectoTech Rapid 4TB External SSD USB-C Portable Solid State Drive (USB 3.1 Gen 2) – Up to 540MB/s Data Transfer, 3D NAND Flash Online in Thailand. B01NC1RI61
Amazon.com: Fantom Drives Extreme Mini External SSD 4TB - Up to 1050MB/s Read and Write - Portable Rugged NVMe SSD - 1.5"" x 0.5"" x 4.25"" - USB 3.2 Gen 2 10Gbps
Best Portable Hard Drive & SSD 2021: External Storage Reviews
Amazon.com: iStorage diskAshur2 SSD 4TB Blue - Secure portable solid state drive - Password protected, dust and water resistant, portable, military grade hardware encryption USB 3.1 IS-DA2-256-SSD-4000-BE: Computers & Accessories
SanDisk Extreme PRO® Portable SSD V2 | Western Digital Store
Amazon.com: iStorage diskAshur2 SSD 4TB Reed - Secure portable solid state drive - Password protected, dust and water resistant, portable, military grade hardware encryption USB 3.1 IS-DA2-256-SSD-4000-R: Computers & Accessories