3 - IMU1: ICM20689_A (SPI1)
4 - IMU2: ICM20689_B (SPI1)
6 - Barometer: BMP280 (IIC)
7 - Blackbox: Micron M25P16VP (SPI3)
10 - High-performance and DSP with FPU, ARM Cortex-M7 MCU with 512 Kbytes Flash.
11 - DUAL gyro ICM20689_A and ICM20689_B, they can work together to show you better performance.
12 - The 16M byte SPI flash for data logging
13 - USB VCP and boot select button on board(for DFU)
14 - Serial LED interface(LED_STRIP)
15 - VBAT/CURR/RSSI sensors input
16 - Suppose IRC Tramp/smart audio/FPV Camera Control/FPORT/telemetry
17 - Supports SBus, Spektrum1024/2048, PPM. No external inverters required (built-in).
18 - Supports I2C device extend(baro/compass/OLED etc)(socket)
19 - Supports GPS (socket)