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That's an easy one!

Each Network Interface Card (NIC) has its own machine level address, called a MAC address which is assigned and programmed into it during manufacture. This is different from the IP address, which can be changed.

A NIC is a special hardware card that handles the sending and receiving data computer network.

The address that identifies a NIC is called the Media Access Control (MAC) address. A MAC address identifies a specific physical device and never changes for the life of the NIC. Two NICs never have the same MAC address (unless some manufacturer screws up royally [which has happened]). Because your NIC's MAC address is permanent, it's often referred to as the "real," or physical, address of a computer.

Two get two cards working just install them and their drivers. If they are both identical, they can use the same driver set.

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โˆ™ 2011-09-13 00:03:37
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Q: How is it possible for two network cards to work on the same computer?
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