Airlink101 AP421W User Manual page 35

If you want to block specific PCs from communicating with the Access Point, select
Deny wireless connection to join the unit from the list.
If you want to allow specific PCs to communicate with the Access Point, select Allow
wireless connection to join the unit from the list.
To enter the first 20 MAC addresses, select MAC Addresses 1~20 and complete the
appropriate MAC fields. To enter additional MAC addresses, select MAC Addresses
21~40 and complete the appropriate MAC fields.
Complete each field with the MAC address of a specific PC. Each MAC address should
be entered in this format: xxxxxxxxxxxx ("x" represents the actual characters of the
MAC address).
Click Apply to save the changes.
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