Microsoft WINDOWS XP Professional is the next version of the Windows operating system, which is designed for businesses of all sizes, and for individuals who demand the most from their computing experience. Windows XP Professional goes beyond the benefits of windows XP home Edition with advanced capabilities designed specifically to optimize productivity using the latest advancements in the digital world. Built on the solid foundation of Windows 2000, Windows XP Professional provides improved reliability, security, performance and ease of use, setting the new standard in efficient and dependable computing.
Product Specification :
Operating System :Windows XP
License :Version upgrade package
Pricing Level :Academic
Media Format :CD-ROM
Max License Size :1 user
Product Type :Retail
Required Processor Class :Intel Pentium
Required Processor Speed :233 MHz
Required Memory :64 MB
Required Disk Space :1.5 GB
Other Requirements :Mouse or compatible device, CD-ROM
Base Warranty 
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Basically this is an upgrade for most users, academically, it is used by my older students who need the simplicity of the latest Windows version, while still enabling them to learn how to use a computer.
Pro : Easy to use, setup, network, & fix
Con : it's ugly