TX1 development board serial print information which adapter?

TX1 development board serial print information which adapter? Do you need a special cable?

How to get the Uart log to find out if the system boots properly.

The serial console port wiring is described here:
[url]http://elinux.org/Jetson/TX1_Serial_Console[/url]

Note in that document the requirement for 3.3V TTL serial UART.