IOGear GCL1816KITU - Manual (Page 23)

A USB printer or other USB devices such as
a USB scanner, a USB flash drive, etc.
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The USB sharing port is located below the LCD display and next to the firmware upgrade port. This USB
port allows you to share a USB device ONLY for the computers that are connected to the LCD KVM via
USB KVM Cable (The green connector KVM cable). Also, the USB device can ONLY be shared between
the computers that are physically connected to the same level of the LCD KVM. That means the 2nd level
cascading computers cannot share this USB device if the USB device is connected to the LCD KVM (1st
level).
USB Sharing Port