Some USB drives need to be ... To make apps from the Mac App Store install on an APFS-formatted external drive, open the App Store by clicking its icon in the Dock, then click App Store > Settings ...

Once finished, your USB drive will then display a lock icon in File Explorer ... you to password-protect your USB drive on ...

See sneakernet. USB drives are generally formatted as FAT or exFAT, which makes them compatible between Windows and Mac computers. See FAT32 and exFAT. Debuting at the turn of the century ...