Logitech "unifying" receiver buttons aren't?

[Gene Heskett <gheskett@shentel.net>]

Greetings all;

What does the word Unifying, as I see in dmesg for some, but not all, the 
the rx buttons for wireless keyboards/mice, actually mean?

I took that to mean that it could work for both their (logitech's) 
keyboards or mice, possibly at the same time so that it might be usable 
for both at the same time, thereby saving a usb2 socket.

Testing that theory got that idea squashed, so what exactly does that 
word unifying mean?

Cheers, Gene Heskett
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