The MAC address, short for Media Access Control address, is a number in hexadecimal format that uniquely identifies every machine on a network.

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1 WinXP/2000 Windows PC - "MAC Address" Information The MAC address, short for Media Access Control address, is a number in hexadecimal format that uniquely identifies every machine on a network. Finding your wireless Mac Address This assumes that you already installed a wireless card. If you do not already own a wireless card you must purchase one and install it before trying to find your MAC address. Click here for suggestions where to purchase a wireless card. Finding your MAC address: 1. Bring up the Start menu and then click on the "Run..." icon. 2. In the new window that pops up, type "cmd" without the quotation marks, as shown below, and then click OK. 3. You should now see what is called the command-line interface. In this new window, type "ipconfig /all" without the quotation marks as in the circled area below. Note the line that says "Physical Address... :" and then has a string of 6 groups of 2 characters seperated by dashes. Those 12 characters are your MAC

2 address. It is important to get the MAC address from the section associated with your wireless ethernet adapter and not another adapter. (click on image for larger view) In this example, the MAC address is Your MAC address will be different. Win 98 Windows PC - "MAC Address" Information The MAC address, short for Media Access Control address, is a number in hexadecimal format that uniquely identifies every machine on a network. Finding your MAC address: 1. Bring up the Start menu and then click on the "Run..." icon.

3 2. In the new window that pops up, type "winipcfg" without the quotation marks, as shown below, and then click OK. 3. In the IP Configuration window, you need to make sure that you have your wireless ethernet adapter and not something else. Pull down the circled dropdown menu by clicking on the down-triangle and choose your wireless adapter.

4 4. After your wireless ethernet adapter is selected, the MAC address should show up in the box labeled "Adapter Address". MAC OS X In this example, the MAC address is Yours will be different. Macintosh - "MAC Address" Information The MAC address, short for Media Access Control address, is a number in hexadecimal format that uniquely identifies every machine on a network. Finding your MAC address: 1. Go to your Applications folder by clicking on the Applications icon at the top of a new window (1). Then go into the Utilities folder (2). Then run the Network Utility application (3).

5 2. Inside the Network Utility application, select your wireless ethernet adapter from the drop-down menu(1). You can make sure that you have the right adapter selected when you see your wireless adapter in the underlined region(2). It should mention of or wireless. Your MAC address is in the underlined region(3) next to "Hardware Address".

6 In this example, the MAC address of this computer is Yours will be different. Mac Classic 9.x Macintosh - "MAC Address" Information The MAC address, short for Media Access Control address, is a number in hexadecimal format that uniquely identifies every machine on a network. Finding your MAC address: 1. Bring down the Apple menu in the very top-left corner of the screen (1). Next, move the mouse over the Control Panels folder to display all the contents (2). Select the TCP/IP control panel(3).

7 2. After the TCP/IP control panel loads, go to the Edit menu and select "User Mode..."

8 3. In the User Mode window, make sure that the circle next to "Advanced" is selected under "Select user mode". Then click on the OK button. 4. Back in the TCP/IP control panel window, choose your wireless ethernet adapter in the "Connect via:" pull-down menu(1). In this example, the computer has an AirPort Wireless card. After the wireless card is selected, click on the "Info" button(2). 5. In your TCP/IP Info window, under the Addresses section, there should be a line that says "Hardware address:". This is your MAC address.

9 The MAC address in this example is Yours will be different.