To connect 2 managed PoE switches with a single Cat6 cable, you only need to follow a few simple steps. Connect the Cat6 cable to the LAN port on each switch, and then configure the switches to communicate with each other by configuring VLANs, setting up QoS policies, and other. PoE switches are designed to provide both data and power to network devices, eliminating the need for separate power cables and adapters. Can you link them together? The short answer is yes, but there are. PoE Switch are a networking device that are able to give power through the same Ethernet cable that is being used for data transmission. I was told that it can still use switches for networking.