Microsoft Windows XP Pro x64 Edition SP2C for System Builders - 1 pack [Old Version] The Professional Edition provides greater security and privacy, advanced recovery options, improved network connections, and much more. Easily work offline or access your computer remotely with wireless networking support, configuration wizards, improved power management, and more. Encrypt your files and folders with greater levels of protection from hackers and data theft, and connect more securely to Virtual Private Networks. Integrate with Windows Servers and management solutions and keep your system current with automatic Windows Update.