Hi Bruce,
A strange issue i've had with the 88UB - when it's plugged into some usb ports it works, and in others it doesn't.
I think it must be something to do with the power requirements of the keyboard - when it's plugged into a standard usb 2 socket, I get the attached "USB Device not recognised" error (I've tested this with Linux mint and OSx) - it doesn't work in some USB ports.
When I use it in a USB 3 port, no problems, works like a dream.
No problems with it - I'm just interested, Any ideas?
Many thanks,
Also if you can stock the new Topre leopold if it makes sense.