Features: brand new and high quality 3000 volt isolation from POE terminal to -DC output A POE router or switch that supports the 802.3af network standard requires only one network cable to connect for Raspberry Pi to achieve networking and power supply. It can provide POE power for Raspberry Pi 4 or 3B+. Support 802.3af network standard PoE circuit The POE power supply module provides an effective solution for the device Specifications: Item: POE Power Supply Module Output Voltage: 5V 0.046A Input voltage range: 44V~57V (active POE) Working temperature: 0C~50C Product size: approx 59.5x39.5x11mm/2.34x1.56x0.43in Note: Due to the different monitor and light effect, the actual color of the item might be slightly different from the color showed on the pictures. Thank you! Please allow 1-2cm measuring deviation due to manual measurement. Package includes: 1 X Power Supply Module(Only) 1 X Heatsink