The Microsoft Works 9 Installation Software CD OEM 2007 Part X13-66561 is an office software suite by Microsoft designed for Windows operating systems. This CD includes the installation software for Microsoft Works 9, which requires a minimum of 256 MB of RAM. The software is in English language and is suitable for use on one device. This OEM part ensures that users can install and use the Microsoft Works 9 application on their computers, making it a valuable addition for those in need of a reliable office software solution.