Support the full range of STM32 SWD interface debugging, simple interface (including power supply), 4 speed, stable work; Interface definition shell directly address 't need to read instructions Support the firmware upgrade automatically. When they leave the firmware has been upgraded to the latest V2. The J17. S4. Increase the 5 v power output, the output it can the I/O port, not afraid of error cause damage of ST - LINK V2 Easy interface to use pure copper plating 2.54 spacing horn, with 20 cm , can deal with different board sequence, flexible connection; Use U disk aluminum alloy shell to the mainboard, convenient to carry, not afraid of static electricity, not afraid of tumbling. Support all series STM8 SWIM download debugging (common development environment such as IAR, STVD etc.) are supported. Support the software version is as follows: ST - LINK Utility 2.0 and above STVD 2 and above STVP 3.2.3 and above IAR EWARM V6.20 and above IAR EWSTM8 V1.30 and above KEIL RVMDK V4.21 and above Colour: random colors, 't accept the specified color Material: plastic + metal Package Contents: 1 * Voltage Regulator (note: random color, 't accept the specified color) 1 * wire Only the above package content, other are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.