Hi Kareem,
I have the 2019 CEM40 Mount and an ASIAIR Pro on latest firmware. It works great if all you want to do is one target because after finishing a target the Mount becomes unresponsive if you try to slew to another one. I have to either unplug the Mount usb and plug it back in or toggle off the mount in the ASIAIR and toggle it back on again to get it to work. I mention both methods because usually one of them works. It’s a real pain and so far no one at ZWO has suggested what to do in my other post. I have not yet tried a usb hub as suggested by owners of the later CEM40 versions post 2019 model. I intend to try that option but don’t hold out much hope as ZWO technicians seem to blame the ioptron chipset for many errors. I can’t understand how I am able to go to a target, guide really well and image ok for hours if it’s a usb connection issue. I think it’s a bug in the ASIAIR. Good luck using your mount.
