This is a custom made Windows 7 SP1 HP OEM disc. It contains both 32 and 64 versions of Windows on 1 disc. It contains updates all the way up to May 6, 2011.

Windows 7 Starter x86
Windows 7 Home Basic x86, x64
Windows 7 Home Premium x86, x64
Windows 7 Professional x86, x64
Windows 7 Ultimate x86, x64
The activation will work only if your Computer come with a SLIC 2.1 table installed on the motherboard. If you install and your copy is not activated, then you obviously do not have a mother board with SLIC 2.1. In that case, use Windows Loader 2.0.2 (included on the root of the ISO). Now just because I made this into an HP disc, dose not mean it wont work say on say a Dell. It will work, it will just have HP themes installed that you can uninstall after you install. Also, the edition you select will also auto install the correct key.