So the usb connector broke on the back of our Trotec Speedy 400. It's what the usb cable connects to on the back. Basically a cheap plastic connector with 4 pins in it, the plastic part came off in the usb cable when we unpluged it to get behind and clean the machine.

Support has suggested we buy a Serial to USB cable and skip fixing it, the tech said the only way that port breaks is by user error and it's not covered under warranty. The machine is only a year old and under warranty. I went ahead and ordered the serial to USB connection to try it, but I wanted to get your thoughts. Should they be replacing that port under warranty, what do you guys think?