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, featuring 1 RS232 interface, 1 RS485 interface, 2 CAN interfaces, 1 Ethernet interface, 1 USB HOST interface, 1 USB DEVICE interface, three user buttons, and three user indicators. Suitable for IoT application development, gateway server development, bus communication development, and industrial control. TF card: 9-pin small card, controlled by PC and PD pins Wireless interface: P3 leads to NRF24L01 interface USB interface: One host USB and one device USB Storage: Built-in 24C02 and 25Q64 memory chips Temperature sensor interface: Exposed sensor interface JTAG interface: JTAG compatible Buttons: K1, K2, K3 three user buttons Indicator lights: LED1, LED2, LED3 three user indicators Note: Due to different product batches, the appearance may vary, which does not affect functionality. Color: Blue Material: PC+Metal Package Contents: 1 x Development Board 1 x Cable Only the above package content is included; other items are not included. Note: Light reflection and display differences may cause slight color variations between the image and the actual item. Measurement error allowed is +/- 1-3 cm.