Frequently Asked Questions  

Q: How easy is it to change mac address?

A: Very easy! You can change MAC address in six easy steps.



1) Install your SpeedDemon.


2) Place the configuration disk in the floppy drive and turn your computer on.

3) Type "M" to change MAC address, press enter.


4) Type your desired Ethernet address, press enter.


5) Press "Y" to change mac address.


6) Press "E" and enter to reboot.

Q: I want to change MAC address, should I buy a SpeedDemon network card?

A: Software manufacturers can limit software so that it can be used only with an authorized network card. This form of copy protection relies on the network card's hardware address. This effective method of copy protection disadvantages legitimate users because network cards often fail. Having SpeedDemon network cards available ensures that your network will endure a hardware failure.

Furthermore, you can connect to the Internet through your Broadband Internet Service Provider (ISP) only if your computer has a network card or cable modem with an authorized network address. If you change mac address, your SpeedDemon network card clones your network card that is authorized to access the Internet. Your SpeedDemon with change mac address will allow you to connect two different computers to the Internet with only one subscription. This method of broadband connection sharing requires only a single Internet account and does not require the two computers to be connected.

Every other method to change MAC address is inferior. Software-based methods to change mac address merely modify your registry or other system files. They don't really change MAC address, they only fool your computer into thinking that you have a new Ethernet address for a short time. With software-based solutions, your hardware address will eventually reset back and there is no money-back guarantee. Furthermore, computer programmers and network professionals detect this inferior method and prevent it.

Now that SpeedDemon adapters are available, a new; easy; and practical method to change mac address is available.

Q: What is significant about SpeedDemon network card ability to change mac address?

A: SpeedDemon network cards allow you to change MAC address thousands of times. When you change MAC address so that the SpeedDemon duplicates another computer's network address makes the computer with the SpeedDemon appear to be the same computer as the one with the original network address. ISP's rely on a computer's Ethernet address in order to authorize (or deny) access to the internet. If you change MAC address, using a SpeedDemon will allow you to have two computers authorized to access the internet; one computer at home that is authorized by your ISP and the other computer at your office with a SpeedDemon.

Q: If I'm connecting two computers to my ISP's network, why don't I just get two accounts from my ISP instead of change mac address?

A: Because you will pay double in subscription fees. ISP's offer major discounts if two computers are connected to the Internet using only one subscription, one computer with a SpeedDemon with a change mac address and an additional IP address.

Q: Why don't I just buy a hub or switch?

A: A hub or switch may suit you better than a SpeedDemon if the computers you are trying to connect to the Internet are physically located next to one another. However, if the computers you are trying to connect to the Internet are located across a house or in different buildings, the SpeedDemon would be a better choice because the SpeedDemon doesn't require the two computers to be connected in any way. If you don't want network cables cluttering your hallways, you want a SpeedDemon.

Q: Is there another way to change MAC address?


  1. Carefully desolder the EEPROM from your network card.
  2. Place the EEPROM into an EEPROM programmer and hex dump the EEPROM's data to your computer.
  3. Find the data that corresponds to your hardware address (instructions on how to find your network address follow.)
  4. Change MAC address EEPROM data to reflect your desired network address and checksum. Information on modifying the checksum varies among network card manufacturers; in order to find the information, you must contact your NIC manufacturer.
  5. After you change MAC address data, dump the modified data back to your EEPROM and resolder the EEPROM onto your NIC board.

Q: How can I find my MAC address?

A: For windows 2000 and windows xp computers:


1) Click "start", then "run".

2) Type "command".

3) Type "ipconfig /all" and locate your ethernet address in the "Physical Address" field.

A: For windows 95, windows 98, and windows me computers:


1) Click "start", then "run".

2) Type "winipcfg".

3) Locate and click your network card.


4) Locate your change mac address in the "Adapter Address" field.