Help Document Series: Finding your MAC address in OS X

All computers have a unique numerical identifier called a MAC or Ethernet address that lets computer networks direct data traffic to the correct computer. This document will guide you through finding your MAC address on an Apple OS X computer.

Step 1.

Click on the Apple icon at the top of the screen and select the System Preferences option.

Step 2.

This will open the System Preferences window. From here you should select the Network icon.

Step 3.

This will open the Network window. Select the device you wish to find the MAC address of from the panel on the left. The most common ones are Ethernet (physical connection) and Airport (wireless).

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Step 4.

Once you have selected your device click on the Advanced button.

Step 5.

You will now see the Advanced settings window. Click on the Ethernet tab and make note of the Ethernet ID. This sixteen

digit number (with colons) is your MAC address.

NOTE: You can repeat steps 3 – 5 for other network devices if you need to get other MAC addresses for your Airport or other network adaptors.