The onboard 40PINGPIO interface and standard CM4 connector support access to Compute Module 4 Lite/eMMC series core boards. Equipped with CSI//FAN//USB/RJ45 Gigabit Ethernet port/-SD card/M.2 and other interfaces, it is more convenient to use. For CM4 basic expansion board (type A), it is convenient to learn and evaluate the For computing module or directly integrate it into the product. Powerful functions, mini size, only the size of a bank card. Although the board is small, it has all the internal organs. Product name: Expansion board Model: CM4-IO-BASE-A Interface: CSI//FAN/-compatible/USB/RJ45 Gigabit Ethernet/-sd card/M.2 Working voltage: 5V supply current: 3A Purpose: dedicated base plate for computing module Plug Type:US Plug,it applies to Canada, India,Mexico, Thailand, the United States, the Philippines,Taiwan and so on. color:Blue Material:PCB size:85 x 56mm Package Contents: 1 x Expansion Board 1 x Shell (Upper And Lower Panels) 1 x Fan 1 x Supply 1 x Screwdriver 1 x Screw Package 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.