The USBtinyISP is a USB-based ISP programmer designed for AVR microcontrollers. It can be used to program most AVR microcontrollers. The Arduino IDE has always been compatible with the USBtinyISP programmer, primarily used for downloading bootloaders. This programmer comes with a 6-pin connector cable and is suitable for programming most AVR microcontrollers, in addition to being used as a programmer for Arduino boards. It is USB powered and can directly power the Arduino board. Open the Arduino IDE, select the desired hardware name in the Board menu, then select USBtinyISP under Burn Bootloader to start downloading the bootloader. The download will be completed in 1-2 minutes. 1. ISP Interface: 6-pin and 10-pin 2. Dimensions: 28.8mm x 61.6mm 3. Module Weight: 16g 4. Power Supply Options: External power supply and USB power supply (If using external power supply, please remove the yellow jumper cap near ISP10). Color: As Shown Material: PCB Package Contents: 1*USBtinyISP 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.