This Endnote CD-Rom is the perfect tool for researchers and publishers alike. With its user-friendly interface and extensive features, creating accurate and professional bibliographies has never been easier. This product is compatible with both Windows and Mac operating systems, making it a versatile addition to any software collection. Additionally, its sealed packaging ensures that the product is brand new and ready for use right away. The Endnote CD-Rom is a must-have for anyone looking to streamline their writing process and produce high-quality work.See photos for operating systems. This is a upgrade and requires previous serial number for installation. The packaging has a small tear in the outer plastic on the front top right-hand corner. Brand new and still sealed.Thanks