@Virgo Thank you for your response! I have, so far, only opened one of the switches and attempted to swap it out for a Netgear switch. The lay of the land looks basically like this. In the church...

I ordered two TP-Link 24-port unmanaged switches from Amazon recently to replace a pair of very old Netgear switches on the church network. I bought these in particular for the "plug-and-play"...