Efficient Networks EEE 802.11b/g Wireless USB 2.0 Adapter - Manual (Page 36)

IEEE 802.11b/g Wireless USB 2.0 Adapter Version 1.2
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3.2.3.11 Pre-Shared Key (Static WEP)
You may select 64, 128 or 152 bit WEP (Wired Equivalent Privacy) key to encrypt
data (Default setting is Disable). WEP encrypts each frame transmitted from the
radio using one of the Keys from a panel. When you use WEP to communicate
with the other wireless clients, all the wireless devices in this network must have
the same encryption key or pass phrase.
Select the Pre-Shared Key (Static WEP) radio button and click on the
Configure button.