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Computer Key command to
activate port
Key command to
deactivate port
Gateway FN-F3 FN-F1/FN-F1 again
simultaneous
FN-F3 FN-F1
Grid* ** FN-F2, select auto or
simultaneous
FN-F2
Ctrl-Alt-Tab Ctrl-Alt-Tab
Hitachi FN-F7 FN-F7
Honeywell FN-F10 FN-F10
Hyundai setup screen option setup screen option
IBM 970* automatic warm restart
IBM ThinkPad** reboot, enter setup menu FN-F2
FN-F7, select choice from
setup menu
FN-F1, select choice
FN-F5, select choice
PS/2 SC select choice (such
as CRT, LCD)
Infotel FN-F12 FN-F12
Kaypro start up, monitor plugged in unplug monitor
Kris Tech FN-F8 FN-F8
Leading Edge FN-T FN-T
Mac Portable 100 no video port; not compatible
Mac PowerBook
140, 145, 150, 170 no video port; requires a third-party interface
160, 165, 180, 520, 540, 5300 Control Panel folder,
PowerBook Display folder;
Activate Video Mirroring
warm restart
210, 230, 250, 270, 280, 2300 requires Apple Docking Station or Mini Dock
Magitronic FN-F4 FN-F4
Mastersport FN-F2 FN-F1
Micro Express* automatic warm restart
Micron FN-F2 FN-F2
Microslate* automatic warm restart
Mitsubishi SW2 On-Off-Off-Off SW2 Off-On-On-On
Appendix B. Portable and mobile computer activation B-3