Texas Instruments 4000M - Manual (Page 16)

Using the AC Adapter
AC Adapter
AC Charges the internal battery pack(s) and
Adapter operates the computer on AC power whether or not a battery pack is
installed.
Caution: Use only the AC Adapter supplied with your computer. Another
adapter may damage your computer.
Connecting the AC Adapter
1. Set the power switch to the off ([u]) position, or press Standby to put
the computer into standby mode.
2. Connect the female connector of the AC cord to the inlet on the AC
Adapter.
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