How to Find A Hardware Address:
Windows OS, Mac TCP & Open Transport

A MAC (Media Access Control) address is the 12 digit hexadecimal address assigned by a manufacturer to every Ethernet device made. Ethernet adapter address and Network Interface Card (NIC) address are terms that mean the same thing.

How to find a hardware address - Windows Operating Systems

For Windows 2000 and XP machines:

• Go to "Start > All Programs > Programs > Accessories > Command Prompt"
• Type "ipconfig /all"
• Press "Enter"

For Windows 95 and 98 machines:

• Go to "Start"
• Go to "Run"
• Type winipcfg
• Click "OK"

For Windows NT machines:

• Go to "Start"
• Go to "Programs"
• Go to MS DOS Command Prompt
• Type ipconfig/all
• Press "Enter"

How to find a hardware address - Macs

For Mac TCP:

• Click on the Apple icon
• Go to "Control Panels"
• Select "Mac TCP"
• Click on "Ethernet" while holding the Option key

For MacOS running Open Transport:

• Go to "Control Panels"
• Go to "Control Panels"
• Select "TCP/IP"
• Press Command "l"

If the above methods fail (for Macs):

• Go to the Apple menu
• Go to Control Panels
• Select AppleTalk
• Make sure that ethernet is selected
• Go to Edit menu and select "usermode"
• Choose "advanced"
• Go back to the Appletalk control panel and click on the info button. The MacAddress should be listed under "Hardware Address".
• From the TCPIP Control Panel you can change user mode to advanced and click on the info button. This will again tell you the macaddress, listed as "Hardware Address".