Asus WL-107 User Manual page 47

WEP Key
This option is enable only if you enable WEP Encryption. The WEP Key is a
64 bit (5 byte) or 128 bit (13 byte) Hexadecimal digit that is used to encrypt
transmit data packets and decrypt received data packets. You have two ways to
assign WEP keys:
Automatic Generation - Type a combination of up to 127 letters,
numbers, or symbols in the Magic Word column, then it will auto-
matically generate WEP Keys.
Manual Assignment - Manual type WEP keys which valid values
include numbers, a~f, and A~F.
Default Key
Determines which entry in the default key table to use for transmitted packets.
Chapter 3 - Reference
ASUS WLAN Card 47