Buffalo AirStation Nfiniti WZR-HP-G300NH User Manual page 19

If you enable Dedicated WEP SSID Isolation,
then AOSS clients that access the network
via less-secure WEP connections (such
as game devices) will be connected on
an isolated network. They will be able to
communicate with the Internet and each
other, but will not be able to access data on
computers and other clients on the network
that are connected by more secure wireless
encryption techniques.
19