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LINDY CPU Switch Dual Junior Installation and Use Page 21
2.7 Other useful installation information
PC boot up sequence - When your PCs are powered on they communicate with
any attached keyboards and mice and setup parameters required by the particular
operating system. It is necessary for the LINDY CPU Switch to be attached and
powered on during this sequence so that it can give the required responses and
keep track of all the modes and settings requested by each of the connected PCs.
Mouse characteristics - do not unplug a PS/2 mouse connection from a PC whilst
the PC is on. Due to the design of PS/2 mice communications the mouse function on
the PC will be lost and you will have to re-boot the PC to regain normal operation.
Unplugging the mouse from the LINDY CPU Switch will also cause it to stop
operating when it is plugged back in. RS232 mice can usually be unplugged and
plugged back in provided that a mouse was connected when the operating system
initially booted. The LINDY CPU Switch is fitted with a PS/2 mouse recovery system
which allows you to disconnect and re-connect the shared mouse without powering
down the system (although this is generally not advisable) - see section 2.8 for
details.
Keyboard and mouse mode switching - The LINDY CPU Switch keeps a log of
the keyboard and mouse mode and resolution settings requested by each of the
connected PCs. These settings are automatically restored to the shared keyboard
and mouse when the LINDY CPU Switch channel is switched thus ensuring
maximum software compatibility. The keyboard num, caps and scroll lock states are
an obvious example of this process.
2.8 Re-enabling a disconnected PS/2 mouse
If you disconnect the shared PS/2 mouse from the LINDY CPU Switch by accident
during operation then the mouse operation will be lost when the mouse is plugged
back in. To avoid having to reboot the entire system in this situation the LINDY CPU
Switch is fitted with an automatic mouse recovery system.
With the PS/2 mouse disconnected, change the channel using the keypad or
keyboard hotkeys. The LINDY CPU Switch detects that the mouse has been
disconnected and triggers the automatic recovery system. Plug in the PS/2 mouse
and the LINDY CPU Switch will re-initialise it.