Sopuli seems to be down, so responding from a different account.
Yeah, it's actually that there isn't power for the Celeron box where all the other Ethernet currently is.
Just so I'm understanding, why would all traffic need to go to my router (do you mean the opnsense one or the tplink one) twice? Wouldn't it go Device -> Switch -> opnsense -> modem > internet? Or for my intranet communications, Device1 -> switch -> opnsense -> switch -> device2