General description This 2X New Jumbospot USB HAT Adapter Board is designed for Raspberry Pi, providing a reliable connection for Linux and Android systems. It supports various protocols and is ideal for creating a hotspot. Technical specifications Color: Green Material: Plastic Measurement allowed error: +/- 1-3 cm Usage Connect to the USB port of Raspberry Pi and run Pistar Select Modem-USB. Supports mmdvm_hs hat, mmdvm_hs dual hat, and modem hat. Compatible with BlueDV for Android, iOS, and Linux, supporting protocols such as DSTAR and DMR. To upgrade firmware, push the B side and long press the reset button; in upgrade mode, the SVC indicator will not flash. Other information Package Contents: 2 * Adapter Card For firmware updates on Linux: use the command 'sudo stm32flash -v -w xxx.bin /dev/ttyAMA0'; for Windows: 'sudo stm32flash -v -w xxx.bin /dev/comx'. Serial COM driver: ch340x, available at http://www.wch.cn/downloads/CH341SER_EXE.html