Introduction
Open System Preferences. Click Network > pick interface > Advanced > Hardware tab. Look next to "MAC Address".
Instructions
2) Click Network.
3) In the left-hand pane, click your desired network connection. (For instance, if you wish to locate the hardware address for your wired network adapter, you might click Ethernet.) Next, click the Advanced button.
4) Click the Hardware tab.
OUTCOME
The hardware address is located next to the "MAC Address" label.