user50189: 
How to use? ATmega328P Development Board for Arduino UNO R3 Bootloader Project DIY. 

user37622: The purpose of this board is to flash (Arduino) bootloader to Atmega 328 chips. It has not a build in programmer, only a ICSP header to connect the programmer.
So wire it with a programmer and then chip in, ZIF close, burn bootloader, ZIF release, chip out, next chip in, ZIF close, ....
video

50189: <p><img src="https://i.stack.imgur.com/3Vwyd.jpg" alt="enter image description here"></p>

<p>How to use? ATmega328P Development Board for Arduino UNO R3 Bootloader Project DIY. </p>
 37622: <p>The purpose of this board is to flash (Arduino) bootloader to Atmega 328 chips. It has not a build in programmer, only a ICSP header to connect the programmer.</p>

<p>So wire it with a programmer and then chip in, ZIF close, burn bootloader, ZIF release, chip out, next chip in, ZIF close, ....</p>

<p><a href="https://youtu.be/Xetz1HKPRUg?t=148" rel="nofollow noreferrer">video</a></p>
