SMC Networks Barricade SMC2404WBR User Manual page 78

Figure 1.2
Note that you are given the option of choosing between four keys. The
keys are displayed as Key 1, Key 2, Key 3, and Key 4. Normally, Key 1 is
recommended. However, you can also enter keys under Key 2, 3, and/or 4.
Once the same key is configured for Key 2, 3, or 4 of your wireless card, the
wireless connection will be established.
Figure 1.3
Also note that the WEP protects data transmitted between wireless
nodes, but it does not secure any transmissions over your wired network or
over the Internet.