solderdude
Grand Contributor
That's taken care of by the internal DCDC converter.
I have no idea how high the leakage current, nor the ripple is though. I'm sure it will work.
Something like this will also be fine:
www.adafruit.com
or this (barrel = 2.1mm):
I have no idea how high the leakage current, nor the ripple is though. I'm sure it will work.
Something like this will also be fine:

5V 4A (4000mA) switching power supply - UL Listed
Need a lot of 5V power? This switching supply gives a clean regulated 5V output at up to 4 Amps (4000mA). 110 or 240 input, so it works in any country. The plugs are "US 2-prong" ...

or this (barrel = 2.1mm):
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