Master MCU:STM32F407VET6-LQFP100 Ethernet chip:DP83848-LQFP48 Serial port:1 RS232 interface with serial port 1 PA9 PA10 RS485 interface:1 RS485 interface with serial port 2 PD5 PD6 CAN interface:2 CAN interfaces with chip PD0 PD1 / PB5 PB6 The development board uses the STM32F407VET6 chip as the main controller, M4 super core, expansion with 1 RS232 interface, 1 RS485 interface, 2 CAN interfaces, 1 Ethernet interface, 1 USB HOST interface, 1 USB DEVICE interface , Three user buttons, three user indicators. Very suitable for loT application development, gateway server development, bus communication development and industrial control. TF card:9-pin small card, controlled by thePC and PD pins Wireless interface:P3 leads to NRF24L01 interface USB interface:One master USB and one slave USB Storage:Built-in 24C02 and 25Q64 memory chips Temperature Sensor interface:Lead out DS18B20 sensor interface JTAG interface:JTAG corresponding to J-LINK button:K1,K2, K3 three user buttons Indicator light:LED1,LED2, LED3 three user indicators Note:Due to different product batches, the appearance may be different, which does not affect use. Colour:Blue Material:PC+Metal Package Contents: 1 * Development Board 1 * Cable 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.