MacPro7,1 has a new device under the T2 bridge called SideCar AVE with a child called VCPSideCar@0: MacPro7,1 Dump
- Unsure if iMacPro1,1 has this virtual device as well in Catalina, need verification
- T2 systems with an iGPU do not have this.
https://github.com/AMD-OSX/bugtracker/issues/1