After you insert the Legion Meter into your charger’s USB port, you’ll plug your cable into the USB port on the back of the meter.

To determine the power, current, and voltage of a USB socket, Windows on-board tools, freeware, and test sticks from $10 can be used.

As reported by Hackaday, the colourfully named 'USB and more tester' can be bought via Tindie for $60, though it has been ...

An electronics engineer known as "Iron Fuse" has developed a custom "USB and More Tester," offering a wide range of testing ...