4Click the Ports tab.
5Make sure:
The port is set to a USB port.
File is not set as the port.
If the document still does not print, then the USB port may not be enabled in the computer. For more information,
see the related topic, “Enabling the USB port.”
Printer cannot communicate with computers over peer-to-peer network
These are possible solutions. Try one or more of the following:

Check the status of the host computer and printer

Make sure:
The host computer is on and is directly connected to the printer.
The host computer can print to the printer.
The printer is shown as Shared in the Printers and Faxes folder (Windows XP and Windows 2000) or Printers
folder (Windows Vista) on the host computer.

Check the printer status

Windows Vista users:
1Click:
(default Start menu) Settings Printers.
(Classic Start menu) Control Panel Printers.
2Right-click the Lexmark 7500 Series icon.
3Click Sharing.
4Click Change Sharing Options, and confirm the Windows prompt.
5Select Share this printer, and then give the printer a distinctive name.
6Click OK.
Windows XP users:
1Click Start Settings Printers and Faxes.
2Right-click the Lexmark 7500 Series icon.
3Click Sharing.
4Select Share this printer, and then give the printer a distinctive name.
5Click OK.
Windows 2000 users:
1Click Start Settings Printers.
2Right-click the Lexmark 7500 Series icon.
3Click Sharing.
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