Open-Synscan is a free open source project to create your own GOTO motorization system for your equatorial telescope mount (like eq-3, eq-5, exos-2, etc...). It implements skywatcher synscan protocol ...
On Indigo A1 (on Mac Sonomo 14.4.1), using Synscan driver and connectin the EQ6-R pro via the USB socket of the mount, the mount seems to connect to what is supposed to be the Bluetooth port of the MB ...