D-Link DPR-1040 Manual page 28

Using PS Software
Printer Port: This field displays basic information and the current status of the
connected printer. It also allows you to use Link and UnLink.
[Link] – The function of this button is to simulate the physical connection between
the printer and computer via a USB cable. This means you can set up a link by
simply clicking this button without physically attaching the printer's USB cable to
your computer. This is because the USB cable will be connected from your printer to
the print server and not to your computer.
[UnLink] – This button disconnects the simulated link between the printer and the
computer.
D-Link DPR-1040 User Manual 24