Welcome to the store! 1. USB M-Key Interface: This CM4 Duino expansion board features an HD multimedia interface USB M-Key interface. 2. CM4 Connector: The standard CM4 connector connects to Compute Module 4 Lite, EMMC series motherboards. 3. Multiple Ports: This computer module 4 expansion board has 1 x USB2.0 Type A interface, 1 x MIPI CSI 2 interface, and a Micro storage card slot. 4. 4K 30fps Output: The RasPi expansion board has 1 x HD multimedia interface supporting 4K 30fps output. 5. Stable Performance: This For RasPi CM4 Duino board uses a 5V power supply, easy to install. Item Type: CM4 Duino Expansion Board Material: Printed Circuit Board CM4 Board: For all versions of Compute Module 4 Connector: M.2 M-Key, supporting communication modules, NVME SSDs, and Duino gplc interfaces USB: USB2.0 Type A port x 1 Camera: MIPI CSI 2 interface x 1 (15pin 1.0mm FPC connector) Video: HD multimedia interface x 1, supports 4k 30fps output Storage: Built-in Micro storage card slot (for versions without eMMC) Power Supply: 5V 1 x CM4 Duino Expansion Board Your satisfaction is our highest priority. We will provide you with the best service. If you find any problems after receiving the product, such as damage, incorrect quantity, etc., please contact us immediately and we will provide you with the best solution!