1. The onboard standard CM4 connector supports access to the CM4 Lite/eMMC series motherboard, and the quad core A72 64 bit processor has more powerful performance 2. Easy interface location compatible with 4B motherboard for raspberry pie 3. On board 4-way USB 3.0 expansion port, compatible with USB 2.0/ 1.1 transmission 4. On board RJ45 Gigabit Ethernet port, 10/100/1000 M adaptive 5. On board PoE pin, supporting access to expansion board with PoE function Product name: CM4 to Pi4B expansion board Interface: 1 gigabit network interface, 4 * USB 3.0 interface, 1 USB-C power interface, 2 * Mini -compatible interface Voltage: 5V/3A Scope of application: for raspberry pie 4B motherboard, CM4 core board Product size: 85 x 56mm Colour:blue Material:PCB+Metal Package Contents: 1 x CM4 to Pi4 Adapter 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.