MCU - WCH CH32V307VCT6 32-bit RISC-V microcontroller @ 144 MHz as described above Networking - 10 Mbps Ethernet: USB - 1x USB 2.0 Type-C port (480 Mbps), 1x USB 2.0 Type-C port (Full Speed: 12 Mbps) Expansion: MCU I/O expansion headers with 8x UART interfaces, and more, for Arduino headers Debugging: SDI & UART header to download and debug CH32V307 firmware USB-C port to connect to WCH-Link (selectable by jumper) Misc - LEDs, Reset button, user button, Power Supply: Switch to select USB or external 5V power supply 5V to 3.3V voltage regulator Colour:Black Material:PC+metal Package Contents: 1 x CH32V307 Evaluation Board Kit(Due to different product batches, the appearance may be different, which does not affect use.) 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.