D-Link Air DCF-660W/K Manual page 20

In the Advanced Configuration window you can configure the following
fields: Power Save mode, RTS Threshold, Frag Threshold, IRQ Number,
and IO Address. After you have made your changes, click on OK button to
take effect.
WEP:
To prevent unauthorized wireless stations from accessing data transmitted
over the network, the Configuration Utility offers highly secure data
encryption, known as WEP, making your data transmission over air more
secure. To activate the WEP Encryption, check the WEP Enabled check box.
An Encryption window will then appear. The instructions are as follows:
To create encryption keys by using a passphrase, click the Create Key with
Passphrase check box and type a character string in the Passphrase field.
As you type, the utility uses an algorithm to generate 4 keys automatically.
Select either the 64bit or 128bit encryption first, and type a string in the
Create Key with Passphrase field. Select one key from the 4 WEP keys
and click OK. Then click the Apply button on the Configuration tab to
make the setting take effect.
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