Here’s something I’ve just worked out that is cool.
The QNAP NAS’s can have a USB to serial adaptor connected to them and you can SSH into the system and access the client device through the QNAP by issuing the command
screen /dev/ttyUSB0 9600
This has been a huge help as my Windows system always crashes when using the same exactly adapter.
Next thing you’ll want to know is how to exit it, that is
Ctrl+A then Ctrl+\
Handy to know for me hopefully it is for you too.