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Asus D550CA-BH21 Power Adapter
The Asus D550CA-BH21 power adapter provides two functions, to charge the onboard battery and powering the laptop. When choosing a new AC charger, the actual Asus brand is always going to be the safest and easiest way to go. A universal power adapter is another possibility if you are desperate. Because Asus has been known to use a single AC adapter that can be used on other units, make sure you check the part number for the correct one. If you decide to buy an non-Asus adapter, it is imperative to note the output of amps and voltage.
Some warnings your AC adapter is dying
- Battery does not charge up whatsoever
- Most Asus AC adapters can get quite warm when they are plugged in for a period of time
- The laptop does not function while solely using the AC adapter
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