IOGear GCL1800 - Manual (Page 20)

PS/2-USB CPU PS/2-USB CPU Console
VGA PS/2
USB
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If you wish to use external monitor, keyboard or mouse rather then the built-in LCD, keyboard or touchpad,
you can connect your external VGA monitor, USB or PS/2 keyboard and mouse to the external console
ports that are located in the back of the LCD Console.
External Console Ports (Optional)