Feature 1 ETHERNET POWER: Power over Ethernet (PoE) expansion board is used for Raspberry Pi 3 Model B+ 4B, supporting 802.3af networking standard 2 EASY TO CONNECT: A PoE router or switch that supports the 802.3af network standard, just one network cable can connect the for Raspberry Pi to achieve networking and power supply 3 SPECIFICALLY TAILORED FOR RASPBERRY PI: The for Raspberry Pi 4B 3B+ newly added a 4PIN POE power supply pin to provide a new power supply solution for the motherboard. For this reason, a POE power supply module was introduced to facilitate the for Raspberry Pi motherboard to be powered by Ethernet and networking 4 WITH COOLING FAN: This is a class 2 equipment, possess 37-57V DC, 5V/2.5A DC output. Come with brushless cooling fan to ensure high efficiency 5 WITH COMPLETE ACCESSORIES: Network expansion board set is equipped with standoff, nuts, screws, easy for you to install and convenient to usedItem Type: Network Expansion BoardMaterial: PCBAProduct Features: Support 802.3af PoE network standard37-57V DC, Class 2 equipmentOutput: 5V/2.5A DC Fan: Brushless cooling fan Package List1 x Module1 x Fan(random brand)3 x Standoff3 x Nut8 x Screw2 x Heat Sink