Finding your hardware address: Mac OS X

You must register your computer's hardware address(es) before your computer can communicate over SUNet. Note that laptops with wireless capabilities will have TWO hardware addresses, one for the wired connection, and one for the wireless connection.

1. On your computer, open System Preferences. To do so, click on the Apple logo on the top left corner of the screen (in the menu bar) and select System Preferences.
2. Navigate to Network .  
3. Select either Ethernet (Wired) or WiFi (Wireless) on the left panel, and then select Advanced on the bottom right.
   The hardware address will be listed at the bottom.
4. Note that for Macs without Ethernet ports (any laptop with a Retina display, or equivalently without a CD drive), if you would like to register your device for wired network access, you must first get an Ethernet adapter for your computer and plug it in before registering.  This is because the hardware address is actually tied to the adapter, so you will only be able to view your Ethernet hardware address with the adapter plugged in.