I am using 115200 that I have in an email from back aways as the speed
to use for Cubie console.
In what way to test the connection? When I connect with
minicom -b 115200 -D /dev/ttyUSB0
I get the console system messages. Thus I know the connection is
working. At least RX!
And I figured out /dev/ttyUSB0 by doing a 'ls /dev/tty*' and looked to
see what is interesting.