Your new PoE hat is designed to be simple to install and set up. Simply orient the correct pins on the Pi, then press it down fully.
And that's it. Once it is in place, simply plug the RJ-45 end into an IEEE 802.3af PoE or 48-56 volt passive Power Sourcing Equipment (PSE) with a data source, and the Pi will start to power up automatically.
Please note that the PiHat is rated for 12.9 watts. If you plan to load down the process or and plug devices into all the USB ports, you might find you draw closer to 15 watts. For that, we recommend our GAT-5v20w with a microUSB connector.