Features: The Power-over-Ethernet (POE) module provides a convenient and cost-effective way to deliver power to your device. The module allows you to put a DC voltage on specific pairs of the Ethernet cable so that devices connected to the network can use it as a power source. The onboard cooling fan can automatically run under power or programmable control when the processor temperature is high. Its small size is a perfect match comptiable with the Raspberry Pi 4B and 3B + in IOT and building automation applications. It provides clean and reliable power comptiable with Raspberry Pi 4B / 3B +. Protection Circuitry,Transient Overvoltage, Undervoltage Lockout, Thermal Shutdown, Foldback Current Limiting. Package Includes: 1Set x Raspberry Pi 4 Model B/3B+ POE network expansion board Specifications: PoE power supply: 37V~57V DC in Output: 5V + -5% to 2.5A * Network standard: 802.3af PoE Size: about 30x30mm / 1.18x1.18 inches note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind becomptiable withe you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks comptiable with your cooperation and we"ll make you feel satisfied. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances.Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours, wish you a happy shopping Thanks comptiable with your cooperation and we'll make you feel satisfied.