Lexmark W812 User Reference Manual page 122

56 USB Port <x>
Disabled
What this message means:
Data has been sent to the printer through a USB port, but the USB port is disabled.
What you can do:
•
Press to clear the message. The printer discards any data received through the USB port.
Go
•
Make sure the USB Buffer menu item in the USB Menu is not set to Disabled.
See also:
USB Buffer
57 Configuration
Change
What this message means:
The printer cannot restore confidential or held jobs on the hard disk because the print
configuration has changed.
Note: The messages 57 Configuration Change and Held Jobs may not be
restored alternate on the display.
What you can do:
Press to clear the message.
Go
56 Standard USB
Port Disabled
122