| Manufacturer |
Command To Send Video |
Command To Return Video |
| Acer America |
Ctrl/Alt/Esc to get into setup option |
Ctrl/Alt/Esc to get into setup option |
| Advanced Logic Research |
Ctrl/Alt/V |
Ctrl/Alt/V |
| Altima Systems, Inc. |
Shift/Ctrl/Alt/C |
Shift/Ctrl/Alt/L |
| Ambra # |
Function F12
Function F5
F2/Choose Option/F5 |
Function F12
Function F5
F2/Choose Option/F5 |
| Amrel * |
Select from setup screen |
Select from setup screen |
| Apple |
See Mac |
| Aspen Computers * |
Automatic |
Automatic |
| AST Computer * # |
Function F5
Function F11
Automatic
Function D from DOS prompt |
Function F5
Function F11
Automatic
Function D from DOS prompt |
| BCC * |
Automatic |
Automatic |
| Bondwell |
After boot up, LCD or CRT option appears |
Re-boot for options to appear |
| Cannon |
Function F7 |
Function F7 |
| Chaplet * # |
Select from setup screen
Function F6
Function F4 |
Select from setup screen
Function F6
Function F4 |
| Commax |
Ctrl/Alt/#6 |
Ctrl/Alt/#5 |
| Compaq * # |
Ctrl/Alt/<
Function F4
Automatic
Mode/? to get into setup option |
Ctrl/Alt/>
Function F4
Automatic
Mode/? to get into setup option |
| Compuadd * # |
Automatic
Alt/F for screen setup option |
Automatic
Alt/F for screen setup option |
| Data General |
Ctrl/Alt/Command |
Ctrl/Alt/Command |
| Datavue |
Ctrl/Shift/M |
Ctrl/Shift/M |
| Dell # |
Ctrl/Alt/<
Ctrl/Alt/F10
Function F8
Function D
Function F12 |
Ctrl/Alt/>
Ctrl/Alt/F10
Function F8
Function D
Function F12 |
| Digital * |
Automatic |
Automatic |
| Dolch |
Set dip switch to CRT before bootup |
Set dip switch to LCD before bootup |
| Epson |
Set dip switch to CRT |
Set dip switch to LCD |
| Everex * |
Select from setup screen |
Select from setup screen |
| ForA |
Ctrl/Alt/Shift/C |
Ctrl/Alt/Shift/L |
| Gateway |
Function F1/Function F1 again simultaneous |
Function F1 |
| Grid * # |
Function F2 & choose auto or
simultaneous Ctrl/Alt/Tab |
Function F2
Ctrl/Alt/Tab |
| Hyundai |
Select from setup screen |
Select from setup screen |
| IBM 970 * |
Automatic |
Automatic |
| IBM ThinkPads # |
Reboot Computer and enter setup menu
FN/F7 to enter setup menu, select choice
FN/F1 to enter setup menu, select choice
FN/F5 to enter setup menu, select choice
PS/2 SC Select from choices (CRT, LCD, etc) |
Function F2 |
| Kaypro |
Boot up with monitor plugged in |
Unplug Monitor |
| Kris Tech |
Function F8 |
Function F8 |
| Mac Portables |
No video output port |
Mac PowerBooks
(100,140,145,150,170) |
No video output port |
Mac PowerBooks
(w/video output port) |
Automatic |
Automatic |
| Micro Express * |
Automatic |
Automatic |
| Microslate * |
Automatic |
Automatic |
| Mitsubishi |
Set SW2 switch to On-Off-Off-Off |
Set SW2 switch to Off-On-On-On |
| NCR |
Select from setup screen |
Select from setup screen |
| NEC # |
Select "active" from setup and choose CRT
Type CRT at DOS prompt |
Select "active" and choose LCD
Type LCD at DOS prompt |
| Olivetti * |
Automatic
FunctionO/*
Function | | |
Automatic
Function O/*
Function | | |
| Packard Bell # |
Function F10
Ctrl/Alt/< |
Function F10
Ctrl/Alt/> |
| Panasonic |
Function F2 |
Function F2 |
| Sampo |
At "C" prompt hit Shift/Ctrl/Alt/C |
Shift/Ctrl/Alt/L |
| Samsung * |
Select from setup screen |
Select from setup screen |
| Sanyo |
Select from setup screen |
Select from setup screen |
| Sharp |
Change dip switch to CRT |
Change dip switch to LCD |
| Tandy # |
Ctrl/Alt/Insert
Select from setup screen |
Ctrl/Alt/Insert
Select from setup screen |
| Texas Instruments * |
Select from setup screen |
Select from setup screen |
| Top-Link * # |
Select from setup screen
Function F6 |
Select from setup screen
Function F6 |
| Toshiba * # |
Ctrl/Alt/End
Function/End
Setup option |
Ctrl/Alt/Home
Function/Home
Setup option |
| Twinhead * |
Function F7
Function F5
Automatic |
Function F7
Function F5
Automatic |
| Wyse |
Software driven |
Software driven |
| Zenith |
Function F10 |
Function F10 |
In most laptops, when an external CRT is attached, the video on the internal screen will be disabled.
*These manufacturers have models which automatically send video out from the CRT port when a monitor is attached.
#These manufacturers offer more than one key command depending on the model of the computer. |