For an AC adapter to power the device correctly, it must:
- Match the input voltage (V) of the laptop exactly.
- Match or exceed the recommended amperage (A).
- Have a plug that fits into the laptop snugly and provides power.
☐ Find the input voltage and amperage listed on the laptop. This may be printed on the back of the laptop, or on the chassis under the battery.
☐ Find an AC adapter that matches the voltage and amperage listed on the laptop. You will be looking in the output section printed on the AC adapter, which should look like this:
INPUT: 100-240V~1.9A 50/60Hz OUTPUT: 16V ⎓ 4.5A
AC adapters are sorted in bins by voltage, amperage, and brand; the bins are color-coded by brand.