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HP LaserJet 400 color M451dn

Printer Cartridges
HP LaserJet 400 color M451dn   NPIEC70A1   75.111.127.109

Proxy Settings

If HP Web Services failed to enable, and your network uses a proxy server, enter the proxy server settings below and try again.
 Check this box if your network uses a proxy server to access the Internet.
 
Enter the proxy server's IP address or enter the fully qualified domain name and port.
(1 - 65535)
 Check this box if the proxy server requires authentication.
 
Enter the proxy server username and password.
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Note: For some networks, you may need to contact your Internet service provider (ISP) for the proxy server address.