Find Your MAC Address on Mac OS

How to locate your MAC address on a computer with a Mac OS.
  1. From the Apple Menu, open System Preferences....
  2. In the Internet & Wireless (Internet & Network in older versions) section, select the Network control panel
  3. Select the desired network device in the list. This will typically be Ethernet for the wired Ethernet port or AirPort for the wireless network
  4. Click the Advanced... button in the lower right corner
  5. Select the Ethernet or AirPort tab as appropriate
  6. The value listed beside Ethernet ID: or AirPort ID: is the Hardware MAC Address for the selected network device. It will be in the format XX:XX:XX:XX:XX:XX

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Include details such as which device(s), your location (on or off campus), how long the issue has been ocurring.