D-Link DAP-3712 User Manual page 28

Section 3 - Configuration
Client When you enable this function, the clients which
Isolation: are connected to the DAP-3712 will not be able to
communicate with each other.
Speed Limit: When you enable this function, you will be able
to set up a maximum upload/download speed for
each client.
VLAN ID: Use this to set up the VLAN ID for the SSID.
Max. Users: Use this to set up the maximum number of clients
that can connect to the DAP-3712.
MAC Filtering: Use this to set up a list of MAC addresses that you
want to allow or disallow to connect to DAP-3712.
D-Link DAP-3712 User Manual 28