I have an Edge520+ and a Mac.
Very occasionally, the mac will recognise the 520+ when I plug in a USB cable, but most of the time it won't. The device charges fine - but the OS doesn't recognise it.
I've tried multiple cables, multiple USB ports, turning everything off and on again, standing on one leg and whistling, turn around 3 times counter-clockwise - all the usual stuff.
All the cables & ports work with other devices, which leads me to believe that there's a problem with the 520.
I tried Garmin support, but they were no help whatsoever.
Does anyone have any idea as to how to make this thing work? Or should I just send it back and get a Wahoo instead?