D-Link dvg-g1402s Quick Installation Manual page 12

Click the Next button.
WEP is for general use and utilizes a Shared Key between
cooperating Wireless devices. WEP encrypts the data
portion of each frame transmitted from the wireless adapter
using one of the predefined keys. Decryption of the data
contained in each packet can only be done if the both the
receiver and transmitter have the same shared key.
Remember that each PC on your Wireless network will have
to have identical Authorization Settings as the router to
connect.
Click Next to continue.
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