Detection of the USB-Serial converter used on your machine (so you get the correct device name to use later):
1. tail -f /var/log/messages or /var/log/syslog
2. Plug in the USB cable
3. It will show up like this:
Nov 19 16:53:12 nyx kernel: [30040.171597] usb 2-1: FTDI USB Serial Device converter now attached to ttyUSB0
Connect with screen as follows:
screen <device> <speed>
root@nyx:~# screen /dev/ttyUSB0 115200
Disconnect with CTRL+a followed by CTRL+d:
[detached from 4197.pts-2.nyx]