Hawking Technology HWPS1UG - Manual (Page 98)

If you want to use WEP encryption to protect your wireless
network, you have to select “ON” to enable the “Wireless
Security” function. The wireless security setting should be the
same with other wireless devices in the same network.
You can select “64 bit ” or “128 bit” length encryption keys.
The longer the key length is, the stro nger your security will be,
however, the addition of WEP will effect your data transfer
performance.
Enter four key values and select one key as the default key.
When you finish configuring the wireless security features of
this print server, click “Next ” to configure the IP address of
your wireless print server module.