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Adafruit USB to 2.1mm Male Barrel Jack Cable [ADA2697]
There's two standard ways to power electronics - USB or 5.5mm/2.1mm DC barrel jack. This or that! With this USB to 2.1mm Male Barrel Jack Cable, you can now power 5V DC powered electronics that have a DC jack from a USB jack with a handy 1 meter long cable.
Simply plug the USB A side to any computer, PowerBoost, USB wall adapter, or even a USB battery pack. Other side is center positive, 5.5mm outer/2.1mm inner diameter jack. We got these made with nice beefy 22AWG wires so you can use it for high current draw. Great for single-board computers or really anything that requires 5VDC.