Standard:IEEE 802.3af-2003 PoE Input voltage: 37~57V DC, Class 2 device;Output voltage: 5V DC/2.5A; Cooling: 30mm x 30mm brushless fan; Fully isolated switched-mode power supply wiki.52pi.com/index.php/RPi_Isolated_PoE_Hat_SKU:_EP-0127 Case for Isolated PoE HAT: B0D5Y7RZ94 or B0CBJXR57B