Microsoft Windows Server 2008 R2 Standard 64-Bit (10 Client Access Licenses)

Windows Server 2008 R2 Enterprise was designed to increase the reliability and flexibility of your server infrastructure while helping save time and reduce costs.

Microsoft Windows Small Business Server 2011 Premium Add-On (5-Device Client Access License)

Windows Small Business Server 2011 Premium Add-On provides small businesses a flexible and cost-effective solution for deploying additional servers on a network running Windows SBS 2011.

Microsoft Windows Web Server 2008 R2 64-Bit

Windows Web Server 2008 R2 expands existing technology and adds new features to enable organizations to increase the reliability and flexibility of their server infrastructures.

Microsoft "Windows Small Business Server 2011 Standard Server License, 5 Clients"

Windows Small Business Server 2011 Standard (SBS 2011 Standard) delivers enterprise-class server technology in an affordable, all-in-one solution.