MAC (Media access controller) address is a unique identifier assigned to every networking device for communication purposes within the network. A user can check the MAC address of the Wireless router from the Network Map option of the main configuration page of the router.asus.com window. The MAC address of a wireless router is utilized for various purposes to maintain the performance of your ASUS router. You can also check the MAC address of an ASUS router on the back of your device from its product label.