Some keyboards present as USB hubs to the computer and aren't compatible. So we need a list of which ones work and which ones don't. Separately, some different language or different layout keyboards may not be supported yet (this may improve with updates though)

Keyboards not working can also be a symptom of an insufficient power supply - either due to the power supply device itself or the USB cable connection it.

Logitech K780

(and see forum links)

(see forum links)

most of the reports are still in the forum: https://www.thebackshed.com/forum/ViewTopic.php?TID=12137&PID=152312#152312

https://www.thebackshed.com/forum/ViewTopic.php?TID=12439&PID=151380#151380

a thread about adding new foreign language keyboards https://www.thebackshed.com/forum/ViewTopic.php?TID=12206&PID=147699#147699