The Power-over-Ethernet (POE) module offers a convenient and cost-effective way to deliver power to your device. The module allows you to inject a DC voltage onto specific pairs of the Ethernet cable so that devices connected to the network can use it as a power source. The module is perfect for any space-constrained PoE applications such as IP cameras, biometric readers, RFID, wireless access points, extenders, VOIP phones, network audio, etc. Its small size is a perfect match with Raspberry Pi 4B and 3B+ within IoT and building automation. It is the ultimate power solution for Raspberry Pi 4B/3B+. It delivers clean and reliable power to the latest Pi 4. Easy to mount. Compatible with: Raspberry Pi 4 Model B / Raspberry Pi 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 Circuit: Transient overvoltage, undervoltage lockout, thermal shutdown, fold-back current limiting Active airflow and adequate cooling are required for stable continuous load. Material: plastic Color: As shown Package Contents: 1 x POE power supply (Label random, do not accept the specified label.) Only the above package content, other products are not included. Note: Light 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.