1. The on - board standard CM4 connector supports the access of CM4 Lite/eMMC series motherboards. The core A72 64 - bit processor has stronger performance. 2. The interface position is conveniently designed and is compatible with the Raspberry Pi 4B motherboard. 3. There are 4 on - board USB 3.0 expansion ports, which are compatible with USB 2.0/1.1 transmission protocols. 4. There is an on - board RJ45 Gigabit Ethernet port, supporting 10/100/1000 M auto - adaptation. 5. There are on - board PoE pins, supporting the access of expansion boards with PoE functionality. Product Name: CM4 to Pi4B Expansion Board + CM4 Core Board CM4 Capacity: WIFI 4G + 32G Interfaces: 1 Gigabit network interface, 4 USB3.0 interfaces, 1 USB - C power interface, 2 compatible interfaces Voltage: 5V/3A Applicable Scenarios: Suitable for Raspberry Pi 4B motherboards and CM4 core boards Target Users: 1. Users of Pi4B who experience unstable use of TF cards and need the on - board eMMC function. 2. Users who need 4 USB3.0 interfaces and find the speed of 2.0 interfaces slow. 3. Users whose application scenarios require a wide temperature range. 4. Users who need an alternative solution as the product is designed based on the Raspberry Pi 4B motherboard. Product Dimensions: 85 x 56mm Color: Blue + Green Material: PCB + Metal Package Contents: 1 CM4 to Pi4 Adapter 1 CM4 Core Board Only the above package contents are included, and other items are not included. Note: Light reflection and different displays may cause slight differences between the color of the item and the actual object. The measurement error is allowed to be +/- 1 - 3cm.