LevelOne KVM-9006 - Manual (Page 11)

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3.2 3-in-1 VGA Cable Installation
The 3-in-1 VGA cable has a HDDB15 male connector at one end. Plug it into
the Local Host port of the KVM-9006R. The other end of input cable has
three connectors: a HDDB15 male type for computer video, a purple mini
din 6-pin PS/2 connector for keyboard and a green mini din 6-pin PS/2
connector for mouse. Plug these three connectors into the respective ports
of computer.
 PS/2 Computer: Plug in PS/2 mouse connector to computer mouse port,
the PS/2 keyboard connector to computer keyboard port. Do not hot
plug PS/2 port. If you must do that, please make sure PS/2 mouse first
then the PS/2 keyboard, then VGA port.
 USB Computer: Connect the PS/2-USB changer to PS/2 keyboard
connector and then plug the changer into an available USB port. This
single USB port can communicate both keyboard and mouse signals. It
works as a standard HID (Human Interface Device), no extra driver
needed. Note that the PS/2 mouse connector should be left
disconnected.