Losing connection to RS485 Interface via USB hub

[simonjmueller97]

Hello,

I am using dbus-serialbattery to connect three JK BMS via Victron RS485 to USB Interfaces to my Cerbo GX. To expand the USB Ports, I would like to use a USB hub, like so many others already do.
Unfortunantly I am facing the issue, that a random BMS is losing conncetion every few hours. If you continue waiting, another BMS will disconnect during the next hours. After restarting the Cerbo GX everthing works fine, but only for some hours.
To diagnose the issue I connected one BMS directly to the Cerbo GX, without using a USB hub --> no more losing the connection for weeks.

Now i am wondering if i used a wrong USB hub? Can someone please give me advice or a tip, which hub is working? I already tested with one active and one passive hub, both showing the same issue.
Maybe my diagnosis is wrong and there is another issue?

Thank you very much in advance!
Simon

[simonjmueller97]

The solution was to use a different hub. I am now using a LogiLink UA0096 10-Ports USB 2.0 Hub, which is working perfectly fine.
Maybe this helps someone else.