PLANET WRT-416 - Manual (Page 24)

5.3.1 None
5.3.2 WEP only
When you select 64-bit or128-bit WEP key, you have to enter WEP keys to encrypt data. You can generate
the key by yourself and enter it. You can enter four WEP keys and select one of them as default key. Then the
router can receive any packets encrypted by one of the four keys