@Ethan-TP Hi, Pinging does not work when any of those computers is off. However the blinking lights on the switch turn orange for the ports of these two PCs. I cannot find any error messages on the...

Router: ER605 v2, firmware: 2.3.3 Switch SG2210MP V5, firmware: 5.0.12 Hardware Controller OC220, firmware: 1.2.11 Build 20251128 Rel.52802 (Stable) I have upgraded my omada setup with the SG2210MP...