Armed with system building features, the Microsoft Windows XP Professional with SP3 (E85-05683) (license and media) OS also includes all the previously released updates. Offering a suite of security features, Internet Explorer 6 in this Microsoft Windows OS allows for secure Web browsing and privacy. To protect your sensitive data, this Windows XP Professional upgrade offers encrypted file systems. The advanced recovery options in this Microsoft Windows OS (full version) help you correct serious Windows errors and restore it to its original state. The wireless network support in this Microsoft Windows OS easily connects to your home or office wireless networks. Improved power management in the Microsoft Windows XP Professional with SP3 (E85-05683) allows you to customize your laptop’s power usage for efficiency. What’s more, with automatic Windows Update, this Windows XP Professional upgrade keeps your PC updated with the latest developments.