CH341A 24 25 Series EEPROM Flash BIOS USB Programmer
This is AVR programmer, designed as a arduino shield. In this way, you can program most of the AVR ICs with arduino IDE and using arduino board as ISP. The AVR Programmer Shield allows you to program ATtiny and ATmega microcontrollers using your Arduino. Instead of pulling out the breadboard and wiring everything up every time you want to (re)program a microcontroller, you can just use this shield! It features a socket so inserting / removing the microcontrollers is a breeze. It also requires no additional software; everything is done through the Arduino IDE or avrdude.