You can
disable access from a USB-connected computer. This restricts
non-network access to the product and protects the security of
confidential scanned documents.
Press the home button, if
necessary.
Select Settings >
General Settings >
Printer Settings. You see
a screen like this:
Scroll down and select PC
Connection via USB.
Select Disable.
Note: You
need to restart the printer to enable the setting. Select
Yes.
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