This is a high quality 'wall wart' AC to DC 5V 2000mA Barrel Jack wall power supply. These are switch mode power supplies which mean the output is regulated to 5V and the capable output current is much higher (2000mA).
These wall adapters are perfect for supplying power to many single-board computers with a barrel jack. Please note, this specific supply (5V/2A) is also FCC/CE certified and works with 100-240VAC inputs and has a Center-positive 5.5x2.1mm barrel connector.
If it requires power, you need to know how much, what all the pins do, and how to hook it up. You may need to reference datasheets, schematics, and know the ins and outs of electronics.
Skill Level: Rookie - You may be required to know a bit more about the component, such as orientation, or how to hook it up, in addition to power requirements. You will need to understand polarized components.
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Based on 2 ratings:
This unit works very well with a BeagleBone Black.
The right angle A.C. plug is great when using it on a power strip. Takes up so much less room.
Would recommend it to others.