Hello @Mathieu
I am glad that I could help!
Of course, it’s too bad we do not have a USB to RS232 adapter with more ports.
We do have a 2 port version that you could add in:
2 Port Industrial Wall Mountable USB to Serial Adapter Hub with DIN Rail Clips
Mfg.part: ICUSB2322I
2 Port USB 2.0 to Serial Adapter Hub - Serial Cards & Adapters
4 ports, if you are curious:
StarTech.com 4Pt USB Serial Adapter
Mfg.part: ICUSB2324I
4 Port USB to DB9 RS232 Serial Adapter - Serial Cards & Adapters
I would be curious to know how the IC232485S tests out for you too.
Thanks!
David.