Supports 3.3V/5V dual power output Supports USB to TTL serial port function Supports RISC-V chip single/dual-wire download and debugging Support with SWD/JTAG interface ARM MCU download and debugging Supports automatic firmware detection and upgrade Can be used for RISC-V architecture MCU online debugging and download, can also be used for ARM MCU with SWD/JTAG interface online debugging and download. At the same time with one serial port, convenient debugging output. 3.3V/5V output power is controllable Automatic power off protection function Red and blue LED indicator light, easy to check the working status Supports one-key switch of working mode of upper computer Colour:Green Material:Plastic+Metal The color is changed to random. The product batches are different. The color and appearance of the board may be different, but it does not affect the use. Package Contents: 1 * WCH LinkE Online Download Debugger 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.