Find Your MAC or IP Address in Windows and macOS

This article provides instructions on how to find the Media Access Control (MAC) address and Internet Protocol (IP) address of a Windows or macOS computer at Idaho State University (ISU).

• Note: You may need your MAC address when registering your computer for DeviceNet. 

• Before You Begin
• Find Your MAC and IP Addresses in Windows
• Find Your MAC and IP Addresses in macOS

• A MAC address is a unique identifier for a network adapter.
  • If you connect to ISU using Wi-Fi, use the MAC address for your Wi-Fi adapter.
  • If you connect using an Ethernet cable, use the MAC address for your Ethernet adapter.
  • On Windows, the MAC address my be labeled Physical Address. 
  • A MAC address usually contains six pairs of numbers and letters from A-F.
    • Example: 00-1A-2B-3C-4D-5E
• An IP address identifies your computer on a network. An IPv4 address contains four sets of numbers separated by periods. 
  • Example: 192.168.0.1

• Use the MAC address for the network connection you will use to connect to DeviceNet.
• For a wireless connection, use the Wi-Fi MAC address.
• For a wired connection, use the Ethernet MAC address. 

1. Open the Start menu.
2. Enter Command Prompt in the search field.
3. Open Command Prompt.
4. Enter ipconfig /all.
5. Press Enter.
6. Find the network adapter you are using:
   • Wireless LAN adapter Wi-Fi.
   • Ethernet adapter Ethernet.
7. Find Physical Address under that network adapter. This is your MAC address. 
8. Find IPv4 Address under the same network adapter.

Note: Windows lists a Physical Address for each network adapter. The Physical Address is the MAC address for that adapter. Make sure you use the address for the connection you are using.

1. Open the Apple menu.
2. Select System Settings.
   • Note: If you are using an older version of macOS, select System Preferences. 
3. Select Network.
4. Select the network connection you are using. 
5. Select Details.
   • Note: On some older versions of macOS, select Advanced. 
6. Find the Wi-Fi Address, Ethernet ID, or MAC Address. This is your MAC address.
7. Select TCP/IP to find your IPv4 address.

Note: The name of the MAC address may vary depending on your macOS version and network connection. If you are connected to ISU using Wi-Fi, use the Wi-Fi Address. If you are using the Ethernet cable, use the Ethernet MAC address.