Please double check the requirement from the power adapter you wish to replace. Most electronic device also have labels indicating the specification for the power adapter it requires. To purchase the right adapter, you must be sure of the following:
1. Output Voltage - needs to be the same as specified. Ok if 0.5 volt off but not recommended. (e.g, if you need 13.4 volt, 13 volt will work as well)
2. Sufficient amp - if your electronic device indicates 2 amp, than anything greater than 2 amp will provide sufficient power and work for your equipment
3. Polarity - must be the same. In the list below (+) indicates positive polarity, and (-) indicates negative polarity
4. Connector - The hardest part is to determine the right connector size as there are many types out there. Please check and make sure you get the right connector. We also have converting plugs that will connect to 2.1mm x 5.5 mm connector of the adapter and output to other type of connector. So if you find an adapter with the right volts and amp output, but simply need to have different connector, than simply get the ones with 2.1mm x 5.5mm connector and buy additional converting plugs.

Please see How to Pick the Right AC to DC Power Adapter for more detail.

Output:
3V, 4.5V, 5V, 6V, 7.5V, 9V, 12V, 13.5V, 15V, 16.5V, 18V, 19V, 20V, 24V

Universal switching adapters (multiple output, also comes with various plugs)