The Microsoft Office Professional 2007 Retail Version is a used CD-based office software suite from Microsoft. It includes various productivity tools such as Word, Excel, PowerPoint, and Outlook, making it an essential application for businesses and individuals alike. With a minimum hard drive space of 2 GB and RAM of 256 MB, this standard license version is compatible with Microsoft Windows 7, XP, and Server 2003. The professional features and reliable performance make this software a valuable addition to any computer setup.