Draytek Vigor2830 Series User Manual page 313

WEP
64-Bit - For 64 bits WEP key, either 5 ASCII characters,
such as 12345 (or 10 hexadecimal digitals leading by 0x,
such as 0x4142434445.)
128-Bit - For 128 bits WEP key, either 13 ASCII
characters, such as ABCDEFGHIJKLM (or 26 hexadecimal
digits leading by 0x, such as
0x4142434445464748494A4B4C4D).
All wireless devices must support the same WEP encryption
bit size and have the same key. Four keys can be entered
here, but only one key can be selected at a time. The keys
can be entered in ASCII or Hexadecimal. Check the key
you wish to use.
After finishing all the settings here, please click OK to save the configuration.
Vigor2830 Series User's Guide
301