I bought one from the Pi Hut (with a GB layout).
I made the mistake of changing keyboard layout to generic 105 keys and now nothing at all happens when I type. Nor does the mouse, which is plugged into it, move now (strange).
I repeated with another copy of Noobs on a new SD card, selecting Raspbian with desktop, and got the same result.
I could just reinstall the o/s and not change the keyboard layout, but I think that the real solution ought to be documented somewhere, and I can't find it by Googling.
And, can I set it by command line? Or by editting some config files?
raspi-config is not my friend; it doesn't display the keyboard selection menu, just returns to where it was previously.