[Ubuntu] Minicom & Oracle VM Permission denied

Cannot open /dev/ttyUSB0: Permission denied

Solution:
$ sudo adduser youracct dialout

Verification:
$ groups

youracct dialout


Oracle VM USB can't work or not find:
Solution:
$ sudo adduser youracct vboxusers

Verification:
$ groups
youracct adm dialout cdrom sudo dip plugdev lpadmin sambashare "vboxusers"