Gigabyte GN-AP02G User Manual page 30

Advanced Page
For enhance the security of the wireless network, this AP provide the MAC
address filtering mechanism to prevent the unauthorized user access. Check
"Enable MAC filter" and key in MAC address table, then only those MAC
address in the table are allowed to connect to this AP.
Enable MAC Filter
Choose the "Enable MAC Filter" and click the "Add" button to add more
MAC addresses or click "Remove" button to delete the MAC addresses
from the Authorized MAC Address table. Besides, you can click "Edit"
button to edit the MAC address.
Disable MAC Filter
The default is "Disable MAC filter".
Verify the desired setting and then click the "Apply" button to set the value into
access point.