Windows

1. Open your Start menu
   
2. Type "cmd" and click Command Prompt in the results
3. At the prompt, type "ipconfig /all" or "getmac -v" and press Enter. (Note: there is a space between ipconfig and the forward slash.)

4. Locate your Ethernet or wireless adapter description. Under description, you will see the category labeled Physical Address. This is your MAC address that you will use for troubleshooting purposes.

   The MAC address is alphanumeric (0-9 and a-f), and consists of 12 characters.

   Example: 00-B0-D0-86-BB-F7

Mac

1. Go to System Preferences
2. Click Network

3. Select your Ethernet adapter on the left

4. Click Advanced

5. Go to the Hardware tab

6. This shows MAC address that you will use for troubleshooting purposes

   The MAC address is alphanumeric (0-9 and a-f), and consists of 12 characters.

   Example: 00-B0-D0-86-BB-F7