TRENDnet TEW-644UB User Manual page 12

Authentication: The following options are available: Open System, Shared Key,
WPA-PSK, WPA2-PSK, WPA EAP-TLS, WPA2 EPA-TLS. Select Open
System, Shared Key for WEP data encryption feature.
Open System and Shared Key
Open System and Shared Key requires the user to set a WEP key to exchange
data with other wireless clients that have the same WEP key. The following will be
activated when Open, Shared Key or Auto is enabled:
Default Key: select one of the 4 keys to use.
Network Key: choose the encryption way, either in HEX or ASCII
formats, and enter the password in the blank space.
Key Length: select 64 or 128 bits as the length of the keys
Key Format: ASCII or HEX
7