Simple board to test various USB cables! (Note the USB standard helps to identify these USB-C, cables that are compliant with the standard will have selected pins according to cable and connector specification release).

Plug in your cable to both sides and see which signals light up!

FOR CABLE USE ONLY. DO NOT EVER PLUG THIS IN TO A DEVICE, THE PINS ON ONE SIDE ARE ALL SHORTED TOGETHER AND THAT COULD BREAK IT!

You can buy the boards from just about any manufacturer and build them yourself. Hopefully your fine soldering skills are up to the task (mine aren't)...