Windows 7 Home Premium SP1 X64 Bit DVD and Product Key
Microsoft Windows 7 Home Premium 64 bit SP1 (i.e. including Service Pack 1 updates) edition full version, including the original OEM installation DVD and the actual Certificate of Authenticity with product key. The DVD is sealed brand new. This to be clear is the OEM version of Windows 7 Professional, full install.
Please note that a Windows installation CD/DVD will install just Windows system files, which include some of the most common drivers, but not all drivers for all models. This means that you will very likely need to install the specific device drivers for your computer after installing Windows. The best place to find the drivers is the web site of the maker of your computer.