GIndicators
(Battery): 
turns on while the AA batteries for the
wireless keyboard are sufficient and switches to 
when the batteries wear out.
(Num lock): Turns on while in the Num Lock state.
(Caps lock): Turns on while in the Caps Lock state.
(Scroll lock): Turns on while in the Scroll Lock state.
(Connect): Turns on while connection between the computer and the wireless keyboard is in place to indicate that the keyboard is ready for use (page 29).
HVolume control buttons
Increase (+) or decrease
!
When the HDMI input is selected, you cannot use the volume control buttons on the wireless keyboard to change the volume. To change the volume for the HDMI input, see Using the HDMI Input Control Buttons (page 67) for the procedure.
IMuting button
Turns the volume on and off.
JS1 button
Opens the Start menu of the Windows Media Center by default.
✍
The default S1 button assignment may be different from the above. In such a case, you can change the assignment with the VAIO Control Center. See Setting Up Your Computer with the VAIO Control Center (page 127) and find out more in its help file.
KTouch pad
See Using the Touch Pad (page 43) for more information.
LDirectional arrow keys
Move the pointer on the computer screen.
MApplications key
Displays a shortcut menu in certain software applications.
NWindows key
Displays the Start menu.