A MAC address (Media Access Control address) is a unique identifier assigned to network interfaces for communication on a physical network. It is a 48-bit number typically represented as a string of 12 hexadecimal digits, such as 00:11:22:33:44:55. MAC addresses are used by network devices to identify themselves on a network and to communicate with each other.
In Windows Vista, there are several ways to check the MAC address of a network interface. One way is to use the Command Prompt. To do this, open the Command Prompt by clicking on the “Start” menu and typing “cmd” in the search box. Then, type the following command: