I have removed Mac OS and replaced with with a fresh installation of Bazzite OS. This transforms the machine into a viable emulation / low end gaming PC. I/O - USB3.0 - 2 x Gigabit Ethernet - 6 x Thunderbolt 2 Ports - Bluetooth 4.0 - WiFi (Via a TP Link USB Dongle) OS - Bazzite OS v44.