Write down the MAC Address for your adapter. The MAC Address and other parameters will be displayed in the DOS window.At the prompt, type the following: ipconfig /all.This number is often imprinted on the network card however, you may query your computer for the number, using one of the following methods: The Ethernet MAC Address is a unique identifier for network cards, of the form 05-A8-34-C3-67-B4 or 05A8342367B4 (6 pairs of digits and characters in the range A-F, which might or might not be separated by hyphens).