Windows 7 Professional SP1 32bit (OEM) System Builder DVD 1 Pack (For Refurbished PC Installation) "Use of this OEM System Builder Channel software is subject to the terms of the Microsoft OEM System Builder License. This software is intended for pre-installation on a refurbished personal computer. This OEM System Builder Channel software requires the assembler to provide end user support for the Windows software and cannot be transferred to another computer once it is installed. To acquire Windows software with support provided by Microsoft please see our full package ""Retail"" product offerings. Looking for your product key? The product key is a 25-digit string with a hyphen between each 5 digits. It will say ""Product Key"" before 25 digits or have an image of a key next to 10 digits with the remaining 15 on the next line below. The Product Key is generally located in the lower left corner of the DVD case, on the disc itself, or on a leaflet in the packaging you received." Intended for distribution with a refurbished PC This product ships in an envelope or plastic case Make the things you do every day easier with improved desktop navigation. Easily create a home network and connect your PCs to a printer with HomeGroup.