Uninterruptible Power: It is to charge the batteries and provide power output for the system at the same time from external power supply Automatically switch over to batteries output if external power supply is unavailable, keeps the system running without any trouble The onboard and connectors are 22PIN 0.5mm pitch, it is recommended to buy adapter and adapter for using with camera and display with 15PIN 1mm pitch connectors Multi Power Supply : Dynamic Path Management, More Stable Power Supply.Three external power supply : USB interface, wide voltage DC, and PoE Extensive Interfaces: for reference only, the SSD is NOT included.Image for reference only, the CM4, display, and camera are NOT included Specifications CM4 SOCKET: suitable for all variants of Compute Module 4 BATTERY SUPPORT: parallel 18650 Li-ion battery x 3 (NOT included) NETWORKING: Gigabit Ethernet RJ45 connector, integrates 802.3af-compliant PoE circuit (5V/2.5A) USB: USB 2.0 Type A x 4 CONNECTOR: 40PIN GPIO header M.2 M KEY slot, for connecting NVME SSD, or communication module with PCIE M.2 M KEY interface DISPLAY: MIPI port x 1 (22pin 0.5mm FPC connector) CAMERA: MIPI -2 port x 2 (22pin 0.5mm FPC connector) VIDEO: x 2, supports 4K 30fps output : Real-time clock with battery socket and ability to wake Compute Module 4 STORAGE: -SD card socket for Compute Module 4 Lite (without eMMC) variants FAN: allows speed adjustment and measurement, 5V / 12V INDICATOR: M.2 status LED CM4 status LED POWER: INPUT 7-36V Material: plastic colour: As shown Package Contents: 1 x CM4 PoE Expansion Board 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.