Scroll down to Information to find your MAC address.Locating the MAC address after Chromecast setup Subsequently, one may also ask, where is the MAC address on Google chromecast? To get the IP or MAC address of thedevice connected on your network, open Google WiFi app >Network Tab > Tap on Devices > Devices > Tap on adevice > Open Details Tab to see the IP and MACaddress of that particular device.