Acer TravelMate 340 User Manual page 14

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2. Connect one end of the AC adapter to the DC-in jack on the rear of the
computer and the other end to a power outlet.
3. Slide the display cover latch to the left to open the display. Slide the power
switch towards the rear of the computer then release it to turn on the power.
The POST (Power On Self-Test) routine executes and Windows begins
loading.