Features: brand new and high quality With ESPRESSIF-ESP32-WROOM-B, LAN8720A Ethernet chip, SI 3404 power management chip. for PoE mode A (powered by data pair) and PoE mode B (powered by backup pair) and auto MDIX, allowing the use of straight and crossover Ethernet cables. 20 needle footprint with 3.3V power and 15 ESP32GPIO are available for your application. The compact 75mm by 40mm footprint is for 4 mounting holes of ordinary M2.5 or 4-40 screws. A small programming/USB serial console sub-module has been created so that the Inter-POE module can be easily programmed to meet the user's application needs. Specifications: Size: approx 70x52.3mm/2.75x2.05in Material:Metal Pinnet-POEChipset: ESPRESSIF-ESP32-WROOM,LAN8720A Ethernet chip,SI3404 Power management chip Flash: 4MB Power Supply Input: Type-C USB 5V Working voltage: 2.7V-3.6V Maximum output current: About 1.2A Charging current:500mA Wi-Fi Standard:FCC/CE-RED/IC/TELEC/Kcc/SRRC/Ncc(esp32 chip) Protocol: 802.11 b/g/n(802.11n，speed up to150Mbps)A-MPDU and A-MSDU polymerization，support 0.4μS for Protection interval Frequency range: 2.4GHz~2.5GHz(2400M~2483.5M) Transmit Power: 22dBm Communication distance: 300m Bluetooth-compatible Protocol: Meet BT v4.2BR/EDR and BLE Wi-Fi Mode: Station/SoftAP/SoftAP+Station/P2P Security mechanism: WPa/WPa2/WPa2-Enterprise/WPS Package Includes: 1 X Double Row Pinnet-POE ESP32 Downloader note: the USB interface only has a charging function, the product needs downloader to program The product does not have a Downloader Expansion Board default, Those who need a Downloader Expansion Board to be purchased separately