... , Mute, My PC, Backspace, Tab Key, Up/Down/Left/Right arrow, Enter, Open, Start, Esc, Numlock, DesktopProduct size: 184*50*30mmProduct ... , Mute, My PC, Backspace, Tab Key, Up/Down/Left/Right arrow, Enter, Open, Start, Esc, Numlock, Desktop.With 4 user-defined ...