Dell Vostro V131 (Mid 2011) - Manual (Page 78)

Hard Disk Drives Specify which hard drive the computer
can boot through.
USB Storage Device Specify which USB storage device the
computer can boot through.
CD/DVD ROM Drives Specify which CD/DVD the computer can
boot through.
Network Specify which network device the
computer can boot through.
Exit
This section allows you to save, discard, and load default settings before exiting
from System Setup.
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