viewing purchased maps in Basecamp without plugging in device


I have downloaded a map - TOPO Australia and New Zealand - on my device (Garmin 64st) and it appears fine in Basecamp when device is plugged in.

Am I able to also download the map directly onto my computer (mac) so I can view without plugging in the device? That would be great. I have tried unlocking, etc but still does not show up unless device plugged in...