This maybe an obvious question.
I am flashing bootloader with the guide https://github.com/96boards/documentation/wiki/DragonBoard-820c-Getting-Started-With-Linux
In the guide,
In order to force the DB820c to boot from SD you need to configure S1 switch properly. S1 is on the back of the board underneath the micro SD slot. Set S1 to OFF,ON,ON,OFF
Connect a USB cable from the micro USB to your PC.
Connect UART console
Connect the power whilst holding S4 (Vol-Minus)
I should connect UART console. But I wonder what I need and how to connect 820c board with my host PC ?