Toshiba Satellite A40 User Manual page 126

Optional Devices
7. Lift up the back of the keyboard, rotate it toward you and lay in face
down on the palm rest.
When you move the keyboard forward, do not touch the keys. Doing so
could cause misalignment. Hold the keyboard by the sides and lay it
gently on the palm rest.
The keyboard is connected to the computer by a ribbon cable. Be careful
not to apply tension to this cable when you lift up the keyboard. Do not try
to disconnect this cable.
Removing three screws and one metal brace, and rotate the keyboard
TOSHIBA A40 Series 8 6