Pair it with a Unify POE switch or power or use a power injector.

If you're familiar with the unifi ecosystem and have a controller already configured on your network then it's super easy to set up. If you're planning to run a couple poe cameras and APs then invest in a 50-60 W injector as you'd be surprised how quickly the power budget gets used up. Works fine powering my relink camera and a couple newer unifi aps but didn't power an older ap I had as is wasn't poe+ comparable.