Andy Burns wrote:

I don't care much about what out-dated or rooted devices do. Current
android devices, will default to charging only, and you have to select
MTP or PTP modes if you want to do transfers.

Thanks for that information as I was surprised how easy it was in that I
did nothing except plug in the phone, and voila!, the file system mounted
as a USB drive on Windows.

From what you said, does that still work on the newer Android devices, only
with an extra step to select MTP mode?

The original mass-storage mode is unavailable now because it required
exclusive access to the file system by the PC, hence android apps needed
to be stopped to allow un-mounting it from android, you might be able to
still enable it if you're rooted.

That makes sense. All I wanted to do was copy files so it worked for me to
use MTP mode. I didn't know it was so easy to mount Android on Windows that
it's automatic.