HP 2500C/CM Professional Series and DesignJet ColorPro GA Control Panel
To enable or disable network protocols
1.Take the printer offline by pressing the online/offline button 
.
2.Press [Menu] repeatedly until MIO MENU appears.
3.Press [Item]. CONFIGURE MIO appears.
4.Press [Select]. CFG NETWORK NO appears. This message does not mean that you must reconfigure your protocol. It means only that you do not intend to access the network configuration menus.
5.Press [Value] to display CFG NETWORK YES . Then press [Select].
6.Press [Item] to scroll through each network protocol until the one you want to change is displayed.
7.To change the protocol status, press [Value] and then press
[Select].
8.Press [Item] to continue to the next protocol.
Example:
To enable the DLC/LLC protocol, press [Item] until the control panel displays either DLC/LLC ON or DLC/LLC OFF.
If DLC/LLC ON is displayed, press [Item] to retain that protocol and continue to the next protocol.
If DLC/LLC OFF is displayed, press [Value] to display DLC/ LLC ON and then press [Select]. Then press [Item] again to continue to the next protocol.
9.To activate the printer and save your changes, press the online/ offline button 
.
To complete the print server configuration, see the HP JetDirect software installation guide included with the product.