FriedCircuits USB Tester v2.0 [Discontinued]USB has become the core of many projects, but it's troublesome to test USB voltage levels and current usage using a breadboard. Some people try to splice cables and alligator clip onto frayed ends, but it's difficult to get solid readings. This USB Tester will make it much easier to monitor any USB project's power source. As part of the USB spec, ports are limited to 500mA, so you want to monitor how close you are. Most people use USB hubs, both