To be able to connect to it, you will also need enough rights. It should show up in dmesg after connecting the cable.
In general, you need to figure out the name of your USB serial port – in case of Linux it is usually /dev/ttyUSB0, but if you already had some serial device (modem, some development board, …) it might be even higher number. In case of UNIX-like systems you can use screen or minicom to connect to your device. You still need to remove the cover to get access to it, but afterward, all you need is to connect a micro USB cable and you are ready.
They already have micro USB connector on board on the left front side. Turris 1.0 and 1.1 have the easiest access to the serial port. The specific cable used in this manual is the Raspberry Pi Cable, TTL-232R-RPI. Connect it to you PC using a USB TTL serial adapter as shown on the photo – from the left the colors of the pins should be black (GND), yellow (RX), orange (TX).
The serial pins are in the right bottom corner of the board, between the right most LED and the LED control button. To do it, first you have to unscrew 6 screws (3 on each side of the router). To access the serial link you need to remove the top cover. If you have PoE addon, you can find pins on addon itself. However on some cables like 6-wire USB cable supplied in some hacker packs, the red wire powers the cable itself and has to be connected to a +1V8 pin. If that is the case, connecting it will fry the MOX. On some cables, this is directly connected to +5V USB power. Take extra care when connecting the red wire. Following pins can be used to access UART: Pin The pins for UART are exposed on GPIO header. Make sure you have correct cable before connecting it, otherwise you will permanently damage your router! The UART cable for Turris MOX requires 1.8V logic.
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