I connect my GPSMAP 62stc to my iMac 5k running Capitan (Mac OS 10.10.5) with Basecamp 4.6.2 and they cannot find each other. I have inserted USB 2.0 hub between the device and Mac and that makes no difference.
The gps display shows the USB icon telling me to plug it in (indicating failure) and Basecamp says "no device connected". I've tried several USB ports on the computer and several USB cables, with and without the USB 2.0 hub inserted.
I've quit Basecamp and restarted with the device connected to no avail.
Any ideas on what I should try next?