A. ### Features 1. It is suitable for the CM4 Wi-Fi 6 dual-port expansion board with complete functions. 2. It has an on-board 40-pin GPIO interface and a standard CM4 connector, supporting the connection of Compute Module 4 Lite/eMMC series motherboards. 3. It has an on-board M.2 E KEY interface, supporting the connection of Wi-Fi modules and wireless network cards such as AX200 and AX210. 4. It has dual Ethernet RJ45 interfaces, including one Gigabit network interface and one Fast Ethernet interface. 5. Application example: It is suitable for Raspberry Pi applications required for multifunctional peripherals or other industrial occasions. B. ### Specification Parameters 1. CM4 socket: It is suitable for all versions of Compute Module 4. 2. Network connection: 1× Gigabit Ethernet RJ45 interface; 1× Fast Ethernet RJ45 interface. 3. USB: 3× USB 2.0 interfaces. 4. PCIe: M.2 E KEY. 5. Connector: 40-pin GPIO interface. 6. Display: MIPI interface (15-pin 1.0mm FPC connector). 7. Camera: 2× MIPI CSI-2 interfaces (15-pin 1.0mm FPC connector). 8. Video: 2× compatible interfaces, supporting 4K 30fps output. 9. Real-time clock: It has a battery interface, which can wake up Compute Module 4. 10. Storage: It has an on-board SD card slot (suitable for versions without eMMC). 11. Fan interface: 5V/12V, not supporting speed adjustment and speed measurement. 12. Power input: 7V - 36V wide-voltage. 13. Dimensions: 109.0×91.5mm. 14. Color: Blue. 15. Material: PCB + metal. C. ### Package Contents 1. 1× Expansion board. Only the above package contents are included, and other items are not included. D. ### Notes Light reflection and different monitors may cause slight differences between the color of the item and the actual object. The allowable measurement error is ±1 - 3cm.