Microsoft Small Business Server 2011 Standard is the right server for small businesses that need a complete, on-premise solution with enterprise-class Windows server technologies for communication and collaboration. Designed and priced especially for small businesses with up to 75 users, Windows Small Business Server 2011 Standard (SBS 2011 Standard) is a complete solution designed for customers who want enterprise-class technologies in an affordable, all-in-one suite.Built on Windows Server 2008 R2, SBS 2011 Standard includes Microsoft Exchange Server 2010 SP1, Microsoft SharePoint Foundation 2010, and Windows Software Update Services. SBS 2011 Standard is a great opportunity for small businesses with prior versions of Windows SBS to upgrade their servers and to simultaneously take advantage of the advancements in security, reliability, and connectivity technology. To make it easier to upgrade from prior versions, SBS 2011 Standard software includes enhanced migration tools, extensive pre-migration checks, and prescriptive guidance.This product comes with 5 Device CALs. Device CALs are likely to be more cost effective than User CALs if there are multiple users per device (for example, multiple people using the same computer). For further information or questions contact a licensing representative at 1-800-474-1045 x3Note: This is an OEM license add-on pack for Microsoft SBS 2011 Standard 64-bit. This includes only the CALs; the server license is sold separately.