title: Nanopi M4V2 UART debugging
body: <p>I have a SBC Nanopi M4V2 (the board link is given below so as to read the specification). I want to use the UART port to debug/console to check what is wrong and why my board is not booting from micro SD. I am new to SBC after searching through internet I understood I need to debug using UART in the board. Hence I intend to buy a TTL to USB serial adapter. After search I got confused as there are many varieties. I am giving the link below can any one answer the below questions</p>
  
  <p>1)Which variety will work with Nanopi M4V2 to debug during booting</p>
  
  <p>2)What are main difference of each TTL to USB cable given in link 3(below)</p>
  
  <p>link 1:- Nanopi M4V2 -> <a href="https://www.friendlyarm.com/index.php?route=product/product&amp;product_id=268" rel="nofollow noreferrer">https://www.friendlyarm.com/index.php?route=product/product&amp;product_id=268</a></p>
  
  <p>link 2:- Nanopi M4V2 hardware spec -> <a href="http://wiki.friendlyarm.com/wiki/index.php/NanoPi_M4V2#Hardware_Spec" rel="nofollow noreferrer">http://wiki.friendlyarm.com/wiki/index.php/NanoPi_M4V2#Hardware_Spec</a></p>
  
  <p>Link 2:- TTL to USb -> <a href="https://www.aliexpress.com/item/4000120687489.html?spm=a2g0s.9042311.0.0.70604c4dZP0BDG" rel="nofollow noreferrer">https://www.aliexpress.com/item/4000120687489.html?spm=a2g0s.9042311.0.0.70604c4dZP0BDG</a></p>