USB was supposed to rule them all but it's now a mess of standards sharing the same connector. Different speeds, voltage, charging protocols, alt modes, even the number of pins used is variable.... For those asking, the thing is available on [Kickstarter](https://www.kickstarter.com/projects/electr/ble-caberqu-a-digital-usb-c-to-usb-c-cable-tester?ref=enskb0)