Technitium MAC Address Changer is a freeware that allows you to change Media Access Control (MAC) Address of your Network Interface Card (NIC) irrespective to your NIC manufacturer or its driver. It can set a new MAC address to your NIC, bypassing the original hard coded MAC address.

MAC address is actually hard coded in the NIC card and cannot be changed. Technitium MAC Address Changer instructs Windows to use MAC address it has specified in windows registry. It writes a value into the windows registry value ‘NetworkAddress’ in the key HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\ {4D36E972-E325-11CE-BFC1- 08002bE10318}\[ID of NIC]. When the network adapter is enabled, Windows searches for the registry value ‘NetworkAddress’ for the MAC address. If a value is present, windows will use it as MAC address, if not, windows will use the hard coded manufacturer provided MAC address.

Technitium MAC Address Changer features:

• Identifies the preset applied to currently selected Network Interface Card (NIC) automatically making it easy to identify settings.
• Changes MAC address of Network Interface Card (NIC) including Wireless LAN Cards, irrespective of its manufacturer or its drivers.
• Has latest list of all known manufacturers (with corporate addresses) to choose from. You can also enter any MAC address and know which manufacturer it belongs to.
• Allows you to select random MAC address from the list of manufacturers by just clicking a button.
• Restarts your NIC automatically to apply MAC address changes instantaneously.
• Allows you to create Configuration Presets, which saves all your NIC settings and makes it very simple to switch between many settings in just a click and saves lot of time.
• Allows you to Import or Export Configuration Presets to or from another file, which saves lot of time spent in reconfiguration.
• Allows you to load any Configuration Presets when TMAC starts by just double clicking on any Configuration Preset File (*.cpf file extension).
• Has command line interface which allows you to perform all the tasks from the command prompt or you can even create a DOS batch program to carry out regular tasks.
• Allows you to export a detailed text report for all the network connections.
• Displays all information you would ever need to know about your NIC in one view like Device Name, Configuration ID, Hardware ID, Connection Status, Link Speed, DHCP details, TCP/IP details etc.Displays total bytes sent and received through the NIC.
• Displays current data transfer speed per second and DHCP lease obtained and lease expires time.
• Allows you to configure IP Address, Gateway and DNS Server for your NIC, enable/disable DHCP, Release/Renew DHCP IP address, and configure Interface Metric quickly and instantaneously.
• Quick keyboard shortcuts for most operations.

You can download the free MAC address changer for Windows Vista and XP here. For more screenshots, visit the Technitium screenshot page.

[Via TechDotBlog]