For Pi is a cost-effective Linux development board based on the Core1106 series module of for Technology, to provide developers with a simple and efficient development platform. Supports multiple interfaces, such as MIPI , GPIO, UART, SPI, , USB and 4G module M.2, etc., suitable for various embedded application development. Onboard 2.4GHz Wi-Fi6 and Bluetooth 5.2/BLE Bluetooth modules, stable connection and efficient transmission. PoE module interface is reserved, and the power supply method of the development board is more flexible. USB expansion: flexibly switch USB-C/4 xUSB-A HOST interface through the dip switch. 4G module M.2 interface: The USB-A-4 interface can be switched to the 4G module M.2 interface through the dip switch, supporting the 4G module SIM7600G-H-M.2. Audio interface: patch microphone + microphone expansion interface + 3.5mm audio output interface, meeting a variety of audio application scenarios. Parameters: Processor: RV1106G2 NPU: 0.5TOPS Memory: 128MB DDR3L Specifications:A:for Pi B W 4G Kit Colour:Black Material:PCB+Metal Package Contents: 1 * development board 1 * antenna 1 * 4G module 1 * adapter cable 1 * screwdriver(The color is random, and the designation is not accepted) 1 * screw(The color is random, and the designation is not accepted) 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.