AVR Programmer ISP USB Bootloader Download Interface
When you buy a brand new Arduino microchip for replacing a damaged one, for example, they usually do not come with the Arduino bootloader on the chip. For your Arduino software to communicate with your Arduino and to upload your sketches, the chip must have a bootloader installed.
To install it you will need this module.
AVR programmer ISP Features:
1. Onboard ATMega8 chip (L)
2. Overcurrent protection
3. Support 5 V and 3.3 V boards
4. ISP interface
1 x USBTINYISP programmer
1 x cable