HP Deskjet 6840 Color Inkjet Printer - Manual (Page 32)

For example, if the printer's network uses WEP, only devices that have the same
WEP settings as the printer will be able to use the printer.
WEP is a network feature
WEP is an optional wireless network feature. Not all wireless networks use WEP.
Configure the printer for WEP only if the printer's network uses WEP. The printer's
WEP settings must match the network's settings. If your network has WEP, you
must use an Ethernet cable to connect the printer to the network in order to install
the printer software.
If the printer's network does not use WEP, then do not configure the printer to use
WEP.
If you do not know if your network uses WEP, consult the configuration utility for
your computer's NIC card or your network's Wireless Access Point (WAP) .
WEP keys
Devices on a WEP-enabled network use WEP keys to encode data.
WEP keys can also be used for authentication.
After creating a set of WEP keys, record and store the keys in a secure location.
You may not be able to retrieve the WEP keys if you lose them.
Caution: If you lose the WEP keys, you will not be able to add a new device
to your network without reconfiguring the WEP settings for every device on
the network.
A WEP-enabled network might use multiple WEP keys. Each WEP key is assigned
a key number (such as Key 2). Each device on the network must recognize all the
network's WEP keys and the key number assigned to each WEP key.
Configuring the printer to use WEP
Follow these steps to configure the printer to use WEP:
1. Open the printer's embedded Web server (EWS) .
2. Click the Networking tab.
3. Under Connections, click Wireless (802.11).
4. On the Wireless Setup tab, click the Start Wizard button, and then follow the
onscreen instructions
5. After configuring the printer, close the EWS.
HP Deskjet 6800 series printer User's Guide
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