I have a Canon IPF8400. It worked great with my 2011 Macboo Pro. However, I just got a 2018 MacBook Pro. It's all USB-c ports, no USB. It seems that the Program printers don't like USB-c connections. The computer doesn't see the printer at all with a USB-c hub, but does see it occasionally with a straight USB-c to USB adapter. With the adapter, I can get it to print once in a while, but when it does it's excruciatingly slow. Canon tech support wasn't much help, saying the Program printers don't work with USB-c, but that some people have luck with adapters.
Has anyone else run into this problem?
John