Locating the MAC address during Chromecast setup: 

  1. From the "Connect to Wi-Fi" screen of the setup process, tap “More” located in the top right corner.
  2. Select “Show MAC Address”.
  3. Proceed to Step 2.

Locating the MAC address after Chromecast setup:

  1. Open the Google Home app.
  2. Select your Chromecast device.
  3. Select "Devices".
  4. Select “Settings”.
  5. Scroll down to Information to find your MAC address.
  6. Proceed to Step 2.