Toshiba SATELLITE A10 - Manual (Page 233)

233 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 panel only
❖ Built-in display panel and external
monitor simultaneously
❖ External monitor only
In order to use a simultaneous mode, you must set
the resolution of the internal display panel to match
the resolution of the external display device.