How to connect multiple AMS2 Pro units to P2S

Bambu Lab P Series Bambu Lab P2S
1

I got my P2S Combo + 2nd AMS2 Pro unit (which arrived damaged so I am waiting on the replacement process to play out) and finally finished printing my AMS Rack with sliding drawers. Both AMS2 Pro units will reside in that rack, and no AMS2 Pro units will sit atop the printer. What I would like to do is to have the external spool feed into one of the 2 ports on the filament buffer, and have the two AMS2 Pro units both feed into the 4-in-1 PTFE Adapter and that adapter feed into the other port on the filament buffer.

My question is: Does one of the AMS2 Pro units need to feed directly into the filament buffer? I ask this because everything in the Quick Start Guide and everything I found online shows one AMS2 Pro unit atop the printer feeding directly into the filament buffer, and then everything else feeding into the 2nd port on the filament buffer using the 4-in-1 adapter.

Many thanks in advance for any help & guidance you can offer!

Ken

2

All AMS units must go through the buffer, always.

Don’t feed external spools into the buffer, ever.

Since the stock P2S buffer has two inlets, feed each of your AMSes into there, no 4 into 1 required.

Now, for your external spool, here’s a great mod that would best suit your needs:

You’ll feed the buffer outlet into one of these inlets, and use the other inlet for your external spool.