Each site could be for a different region for Brainly mainly because I just checked and one of the other Brainly sites had a lot more different people having questions in different languages.
The answer is the Base Row. The home row is the middle row on the keyboard and where the fingers remain while at rest. The upper row and bottom row are the two rows above and below the home rows.
Hey the I/O for Spotify would be. for I or input keyboard and mouse.
and for O or output the sound files being sent from the server to the pc
Hope this helps.
-Toby aka scav
