K-MAC was designed with a single goal in mind: to let users change the MAC address of any network adapter quick and easy without wasting their time.
And as far as we're concerned, this is one of the easiest to use, fastest and most efficient tools of its kind we've ever seen.
Although it does just a single thing, K-MAC serves its purpose absolutely perfect, so you won't be disappointed at all if you wish to do just that, change the MAC address, and nothing more.
The interface is minimal, very minimal actually, because it only lets you choose the network interface (yes, it allows you change the MAC address of any network adapter on your computer), showing the current MAC and providing a special field to let you enter the new MAC.
Just fill in the new MAC, hit the Apply and that's basically it. In case you change your mind and wish to come back to the original settings, press the Rollback button and here you go, the default settings are back.
It's probably a waste of time to mention that K-MAC runs on very low resources, so older machines should have absolutely no problem in running it.
Windows 7 users however must keep in mind that they need to run the application as an administrator in order to be able to apply the modifications.
So just as we said a bit earlier, this is one of the simplest yet most efficient MAC changing utilities in the world, and in case you don't want to spend your time with more complex solutions and trying to figure out the way some advanced features work, this is the tool to try. It's free, of course and runs on all Windows machines.