General Connection (Without Poe); Connection With A Poe Switch - D-Link DCS-6112 Quick Installation Manual

General Connection (without PoE)

Connect the network camera to a switch or router via an Ethernet cable.
Connect the supplied power cable from the camera to a power outlet.

Connection with a PoE Switch

If using a PoE switch, connect the network camera to the switch via an Ethernet cable,
which will provide both power and data transmission over a single cable.
6 D-Link DCS-6112/DCS-6113/DCS-6113V Quick Install Guide