Europe Maps

It depends on what you choose. I think the whole Europe and North America might be too big for the disk size so you might need to uncheck (uninstall) America. I usually only keep those that are relevant. In case I travel to somewhere then I download it's map before the trip. 

Just saw your reply.  Thanks!  I have not gotten  into looking at the Europe map. But can  select  just parts/ individual countries? Or is it only "all of Europe "?

You have groups of countries

You see the maps in Garmin Express app (which you use to upload firmware updates and maps). Europe has now 3 regions: West, Central and Eastern. All 3 can fit on the Explore 2. The app will tell you the maximum size you can install and therefore which mix-and-match sets of maps are possible.