Correct, connecting USB to Crestron in Parallels on an Apple Silicon Mac has never worked and I would not bet money that it ever will.? Crestron has known about this issue for a long time and it is still broken.? Some may say that you could use the UTM hypervisor in place of Parallels but UTM is slow (due to Windows emulation) and not as easy to setup.? If USB connectivity is a requirement then you would need to also carry either a Windows or Linux laptop.? The USB passthrough on all of the Linux hypervisors that I have tested work fine with Crestron.
Dean Detton