Toshiba F15 - Manual (Page 287)

287 Hot Keys
Display modes
5.375 x 8.375 ver 2.3
Display modes
Fn + This hot key cycles through the power-on display
options.
The display modes are:
❖ Built-in display only
❖ Built-in display and external monitor
simultaneously
❖ External monitor only
❖ Built-in display and TV (or other
external video device) simultaneously
❖ TV (or other external video device)
only
Sample display options window
To use a simultaneous mode, you must set the resolution
of the internal display panel to match the resolution of
the external display device.