The LENOVO 4849MKU is a licensing package for Windows SBS (Small Business Server) 2011 Premium Add-on, supporting 1 to 4 CPU environments with 5 Client Access Licenses (CALs) included. This comprehensive solution offers small businesses advanced functionalities on top of the basic Windows SBS 2011 Standard services, including support for running a wide range of business applications on an additional server and enhanced data management capabilities with SQL Server technology. The Premium Add-on enables businesses to leverage more powerful and sophisticated IT infrastructure capabilities, such as running Line-Of-Business (LOB) applications, remote work solutions, and advanced networking services. By integrating seamlessly with Windows SBS 2011 Standard, this add-on provides a cost-effective way for small enterprises to enhance their IT systems' scalability, reliability, and performance without needing a significant upfront investment.