IOGear GCS634U - Manual (Page 13)

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[HKM] [T] – This will change the toggle key used to switch between computers. Each time you enter this
command the toggle key will switch between the default of [Scroll Lock] and the alternate of [Control].
[HKM] [H] – This will change the hotkey used to enter hotkey mode. Each time you enter this command
the keys used to enter HKM will switch between the default of [Num Lock]+[-] and the alternate of
[Control]+[F12]. Please note that you must hold [Control] while pressing [F12] in exactly the same way you
must hold [Num Lock] while pressing [-].
[HKM] [F2] – This will manually set the operating system of the currently active port to Macintosh. This
will allow the KVM to emulate special keys that are normally only present on an Apple keyboard.
[HKM] [F3] – This will manually set the operating system of the currently active port to Sun. This will
allow the KVM to emulate special keys that are normally only present on a Sun keyboard. On some Sun
computers it is necessary to set up the KVM in this way before the system will properly boot up.
[HKM] [F10] – This will set the operating system of the currently active port to Automatic. The KVM will
auto-detect the type of computer on that port to allow emulation of whatever keys are most appropriate to
that computer. This is the default setting for all ports and is appropriate for PC systems.