When using a mix of PM3's and PM5's:
1) Connect each PM3 with USB cable directly into the computer or to USB 2.0 Hub. Plug hub into power outlet.
2) Connect USB hubs together where needed, and connect them to the computer. There should be no more than 2 USB hubs between a PM3 and the computer.
3) Connect all PM5's together with Ethernet cables.
4) Connect ONE of the PM5's with a USB cable to the computer.
5) Optional: Add "Terminators" to any unused RJ45 jacks on PM5 monitors.