Review on 🔌 OIKWAN USB-C Cisco Console Cable: 6ft Type C to RJ45 Serial Adapter for CISCO, NETGEAR, Ubiquity, LINKSYS, TP-Link Routers/Switches - Essential Laptop Accessory by Antonio Rojas

Changing the configuration of the network router can mess up the network enough to make the router unreachable over the network. This serial port gives you that peace of mind - you can always connect to your router through it. I use it with my Ubiquity EdgeRouter ER4 and it just works. Please note that you need to set the options correctly in Putty (or similar terminal). But if you're dealing with professional gear, it shouldn't matter much :).