Microsoft Windows 7 Professional (Dell or HP Stamped). This software will allow you to install a clean install of Windows 7 Pro on ANY computer or you can upgrade a Dell.
You can use this product two different ways. First, you can use this as an upgrade for Vista Business to Windows 7 Professional saving all the settings you have.
The second option is you can use it on any PC (not just Dell) to do a clean install for Windows 7 Professional.
Includes upgrade disc, clean install disc, and COA sticker with key to attach to computer case.