Brother NC-2200W - Manual (Page 18)

NC-2200W WIRELESS SETTING 2 - 7
NC9100h_FM6.0
Network Key (WEP Key)
This key is a 64-bit or 128-bit value that must be entered in an ASCII
or HEXADECIMAL format.
64 (40) bit ASCII: Uses 5 text characters.
e.g. "Hello" (this is case sensitive).
64 (40) bit Hexadecimal:
Uses 10 digits of hexadecimal data.
e.g. "71f2234aba"
128 (104) bit ASCII: Uses 13 text characters.
e.g. "Wirelesscomms"
(this is case sensitive).
128 (104) bit Hexadecimal:
Uses 26 digits of hexadecimal data
e.g. "71f2234ab56cd709e5412aa3ba"