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Finding Your Adapter Address

In order to diagnose some computer issues, you may be asked to provide your Mac Address (also called "Adapter Address") and your IP Address. 

It is always six groups of two characters, separated by hyphens (Windows) or colons (Apple).

Vista

  • Click on the Start Button at the lower left of the screen.
  • In the search area, type in "cmd" and hit enter.
  • A black window will display.  Type "getmac" (no quotes) and press Enter.
  • The information will display. The Mac address is to the left, under "Physical Address." Write it down.

Vista MAC

  • Type "exit" (no quotes) and press Enter to close the window.

Windows XP

(This also works for Vista.)

  • Click on "Start."
  • Click on "Run."
  • Type "cmd" (no quotes) and press Enter. (For Vista, type it into the search field.)
  • A window will display.  Type in "ipconfig /all" (no quotes; put a space after the "g") and press Enter.  Information will display on your screen, including something like the image below:

ipconfig display 

  • Jot down the numbers listed for the Physical Address (This is your Mac Address) and the IP address, as required.  Type "exit" and press Enter to close the window.
    Windows 95/98/SP

We have developed a utility to get the name of your address on Windows XP computer. Download and run findmac.exe and jot down the number it finds.

Download Findmac 

Macintosh

To find the Adapter Address:
OS X

  • Click on the Apple at the upper left of your screen.
  • Click on “System Preferences.”
  • Click on "Network."

Mac System Preferences

  • The network window will display.  Under "Show," select "Built-in Ethernet."
  • Click on "Ethernet."

Mac Ethernet

  • Look for the Ethernet ID.  Write down the numbers and letters listed.

Mac Address on Mac