How to Find My Modem ID Number

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Your modem identification number is a unique alphanumeric code that identifies your modem within your computer system. The modem ID number is also known as the Media Access Control (MAC) address. The modem ID number is recorded by your computer's Internet Service Provider (ISP) as part of your user information. Modem ID numbers are static and are printed on the modem itself---on both internal and external modems. To find your modem ID number, you can do it manually or through your computer's operating system.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Pen
• Paper

Locating the Modem ID - Manually

1. 1
   Turn the external modem upside down so the bottom of the device is facing up.
   
2. 2
   Locate the sticker containing a bar code. The sticker will be on the bottom of the modem.
   
3. 3
   Look for the wording "MAC" or "EA." Your modem ID number will follow the wording "Mac" or "EA."
   
   Some modems may only have "SN." The number following "SN" is your modem ID number.
   
4. 4
   Write down the modem ID number for future reference.
   

Locating the Modem ID -- Windows Operating System

5. 1
   Click "Start," "All Programs," "Accessories."
   
6. 2
   Click on "System Tools," "System Information."
   
7. 3
   Click on "Components" in the left pane of the "System Information" dialog box.
   
8. 4
   Click on "Modem."
   
9. 5
   Locate "Device ID" in the right pane of the "System Information" dialog box. The code next to "Device ID" is your modem ID number.
   
10. 6
    Write down the modem ID number for future reference.
    

Locating the Modem ID -- Mac Operating System

11. 1
    Click on the "Apple" menu. Select "System Preferences," Select 'Network."
    
12. 2
    Select a location by clicking on the down arrow on the box under the heading "Location:."
    
13. 3
    Click on the down arrow on the box next to the wording "Show." Select "Ethernet" from the list.
    
14. 4
    Click on the "Ethernet" tab. The number next to the wording "Ethernet ID:" is your modem's ID number.
    
15. 5
    Write down the modem ID number for future reference
    

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