NEC VERSA 4000 Manual page 25

Keep the adapter connected whenever possible. The AC
adapter charges the battery whether or not you are using the
NEC Versa.
NOTE
range of 100–240 Volts AC. Verify that the cord and
plug are appropriate for your AC source.
Connect the AC adapter as follows:
Connect the AC adapter cable to the power port on the
1.
back of the NEC Versa 4000.
Plug one end of the AC power cable into the AC adapter
2.
and the other end into a properly grounded 120- or 240-
volt wall outlet.
2-2 Using the Hardware
Check that the AC outlet voltage falls in the
Power Port
Connecting the AC adapter
AC Adapter