How do I know what adapter to use?

Any AC adapter is considered compatible with any device if it has all the following traits:

• The voltage of the adapter has to be identical.

  It's possible that a voltage can be "close enough" because many devices are built to work within a certain voltage range. But there's no way to know reliably how your device will handle a different voltage.

• The amperage (amps) of the adapter has to be equal or greater than the device.

  A device draws amperage from an adapter so there has to be at least as much amperage available as the device needs.

• The polarity of the adapter has to be identical.

  The polarity of your adapter (and device) is usually indicated by a diagram with two circles showing a plus (+) and a minus (-) pointing to the outer plug and the inner plug.

Of course, the shape of the plug in your device has to match the shape of your adapter so you can plug it in. If you can match all four criteria, you should be okay.

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