3Com 3CRWDR200A-75 - Manual (Page 55)

Wireless Settings 55
WEP
To enable WEP, select WEP from the Encryption Type.
Figure 33 Encryption — WEP
1 Please choose from 64 bits or 128 bits for the Encryption Strength.
2 Enter the Passphrase which can be up to 31 characters long and may
contain any alphanumeric characters in the field.
3 Click on Generate to generate 4 hex keys automatically. Virtually all
manufacturers support this scheme. Hexadecimal numbers are formed
from 0-9 and A-F. In 64 bit WEP, the passphrase will generate 4 different
keys.
However, in 128 bit WEP, this method only generates 1 key which is
replicated for all 4 keys.
4 Manually assign each key. If you selected 64 bits encryption, enter 10 HEX
characters (0-F) for each key. If you selected 128 bits encryption,enter 26
HEX characters (0-F) for each key.
If you encounter any difficulty when you enable WEP ensure that you
check that each key on your wireless computer is exactly the same as each
key on your Router. In other words, Key number 1 on the Wireless computer
must have the same Hex number as Key number 1 on the Router, Key 2 on
the Wireless computer must match Key 2 on the Router and so on.
5 Current WEP Key: Select a key to be the active key. You can change the
selected key periodically to increase the security of your network.