While not a direct answer, I have had no issues using a Samsung 970 pro ( 500 GB ) or my Samsung 970 pro plus ( 1 TB )
This show as external HDD’s even on older Conputers without UEFI boot.
Performance is obviously limited by the USB Interface , but it is normally 1.5 x faster than SATA connected SSD’s ( using 10 GB/s USB 3.1 )