USB-C, USB 3 (Gen 2)
Crucial X6 4TB USB 3.2 Type-C Portable External SSD
Amazon
Crucial X6 4TB Portable SSD - Up to 800MB/s - USB 3.2 - External Solid State Drive, USB-C - CT4000X6SSD9, Black
Adorama
Crucial X6 4TB USB 3.1 Gen 2 Type-C Portable External SSD