USBRelay and Display Testing

[CeP]

When a ICStation USB relay is active, will Display Testing trigger the relays if the chase pattern is selected?
I connected the USB relay module to the USB port on my Pi Zero, set to start channel 1, output config port to ttyAMA0 (the only one shown) and ticked the Active box and restarted. Went over to Display Testing and enabled the test mode.
I don't hear any relay chatter.
Am I missing a step? 

[CeP]

Solved.
Rule #1- make sure your USB cable is a DATA cable, not just power only. 😩

The correct port now shows up.

(Palm on face)