loverpi power-over-ethernet (poe) hat for raspberry pi 4 model b and raspberry pi 3 model b+ (compact, non-isolated) loverpi <ul> <li>input: ieee 802.3af compliant poe</li> <li>output: 5v +-5% up to 2.5a*</li> <li>protection circuitry: transient overvoltage, undervoltage lockout, thermal shutdown, foldback current limiting</li> <li>* active airflow and adequate cooling required for stable continuous operation at high load.</li> </ul> <p> install poe hat onto the 40-pin gpio header. attach black wire from fan to gnd pin on poe hat. attach red wire from fan to 5v (performance) or 3.3v (quiet) pin on poe hat. insert microsd card with properly flashed os. attach ethernet cable from a 802.3af poe switch.</p>