Draytek Vigor2110 Series User Manual page 241

802.1x authentication. Either 8~63 ASCII characters, such as
012345678(or 64 Hexadecimal digits leading by 0x, such as
"0x321253abcde...").
Type - Select from Mixed (WPA+WPA2) or WPA2 only.
Pre-Shared Key (PSK) - Either 8~63 ASCII characters, such
as 012345678 (or 64 Hexadecimal digits leading by 0x, such
as "0x321253abcde...").
64-Bit - For 64 bits WEP key, either 5 ASCII characters, such
WEP
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.
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Vigor2110 Series User's Guide