The Power-over-Ethernet (POE) Module offers a convenient and cost-effective way to deliver power to your device. The module allows you to put a onto specific pairs of the Ethernet cable so that devices connected to can use it as a power source. The module is perfect for any space limited PoE applications such as IP cameras, biometric , RFID, wireless access points, extenders, VOIP phones, networked audio etc. It's tiny size is a perfect match to the for 4B and 3B+ in IOT and building automation applications. It is ultimate power solution for 4B/3B+. It delivers clean and reliable power to the latest Pi 4. Easy to assemble. Compatible With: for Model B / for 3 Model B+ Built-in Cooling Fan Support IEEE 802.3af or 802.3at PoE standard Input: IEEE 802.3af Compliant PoE Output: 5V +-5% up to 2.5A* Protection Circuitry: Transient Overvoltage, Undervoltage Lockout, Thermal Shutdown, Foldback Current Limiting Active airflow and adequate cooling required for stable continuous operation at high load. Colour: black + blue Material: ABS+PCB Package Contents: 1 * POE cooling fan Power over Ethernet module 3 * Screws 1 * Screwdriver Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.