Hi! I have modified gem45 wiring and succeeded to connect mount from saddle directly to asiair pro. The problem is in internal cable that goes to RA usb b port. If you change it and make it shorter you can connect directly to asiair without using usb hub in the middle. Links below can give you information if you are interested to do it yourself. I'm glad I did.
Andrej
https://www.cloudynights.com/topic/738160-ioptron-gem45-cable-management/#entry11254628
https://www.cloudynights.com/topic/778610-new-ioptron-gem45-and-asiair-issue/?fromsearch=1
Thanks for sharing this. I think it is useful for someone who is willing to do it yourself.