What is this extender? I recently got an Arduino starter kit from a friend that he wasn't using and this came with it but, i can't find anything about it, cause i don't know how to search for it. 
Anyone can enlighten me what it is?
Looks similar to:
&quot;8 Channel 5V/3.3V IIC UART SPI TTL Logic Level Converter&quot;

Image above was screen capped from: https://www.aliexpress.com/item/32977711795.html