Mac can't see the usb port when connecting the duet. [SOLVED]

Hi guys,
I can't select usb ports when connecting with my macbook pro (os 10.9.2). It only seems to return ports with regards to bluetooth.
Does anyone know about a fix?
Br Sebastian

Edit: I changed the USB cable to a higher quality one, and dang it shows up under port options. I find it wird as the led light, actually turned on also when using the RS supplied USB cable.

Edited 1 time(s). Last edit at 05/22/2014 04:32AM by Aagaard.

I have the same problem, last time I tried to update firmware (which is basically the only time I use US. I had to change out my laptop (13" retina MacBook Pro), and the new one was utterly unable to connect. I tried first with a very crappy cable and then changed to a nicer one, and I got different "blinking patterns" from the lights near the USB port. Saw some "could not enumerate device" stuff in the system logs. Ended up connecting it to a linux server (with the same "nicer" cable), and that worked flawlessly.