Due to ongoing problems with my old iMac, Apple replaced it with one of the new machines that have just been released. My problem is that I had to buy a new Connector for my Cintiq (DVI to USB-C). The problem is that the iMac cannot see the connector once it is inserted. I have installed the latest drivers. I have spoken to Apple and Wacom support. Wacom confirms that I have the correct connector but it looks like it hasn't been tested on the very new iMacs. Apple support suspected some kind of incompatability issue between thunderbolt 2&3. I am still working with them to work out a solution but I wondered if anyone else had any insight or solutions?
Any helpful suggestions much appreciated.