I Brought the hub because the web site said I would need it for multiple AMS units, in this case 4, but I also noted you add a Y a adapter with a manual bypass into the back of the printer.
What I am suggesting here is further expanding the Bambu printing landscape by giveing you the possability of running 16 AMS units which have 4 Quick Load filaments - and you can still have a Bypass - so effectively a mix of 64 colours and / or materials + a bypass if you don’t want to load from the AMS