How to Find the Ethernet Adapter's MAC Address

Follow these instructions to find your adapter's Media Access Control address (MAC address). This is not the same as a Macintosh computer, it is a fixed string built in to the hardware, that uniquely identifies a computer device.

Windows 2003

1. Click Start > Run. A command prompt window appears.
2. Type cmd.
3. Type ipconfig/all. (no spaces around the /)
4. Copy down the "Physical Address" (aka the MAC address) on a paper where you keep your network configuration settings.
5. You may close the command prompt window.

Windows XP

1. Click Start > Run. A command prompt window appears.
2. Type cmd.
3. Type ipconfig/all.
4. Copy down the "Physical Address" (aka the MAC address) on a paper where you keep your network configuration settings.
5. You may close the command prompt window.

Windows 2000

1. Click Start > Programs > Accessories > Command Prompt. A command prompt window appears.
2. Type ipconfig /all.
3. Copy down the "Physical Address" (aka the MAC address) on a paper where you keep your network configuration settings.
4. You may close the command prompt window.

Windows 95 and Windows 98

1. Click Start > Run. A command prompt window appears.
2. Type winipcfg.
3. Click OK.
4. Copy down the "Adapter Address" (the MAC address) on a paper where you keep your network configuration settings.
5. You may close the command prompt window.

Windows NT

1. Click Start > Programs > MS-DOS Prompt. A command prompt window appears.
2. Type ipconfig /all.
3. Copy down the "Physical Address" (aka the MAC address) on a paper where you keep your network configuration settings.
4. You may close the command prompt window.

Doc: N101429.asp Nov. 12, 2004