On September 9, 2002, Microsoft released Windows XP Service Pack 1 (SP1) which contained over 300 minor, post-RTM bug fixes, along with all security patches released since the original release of Windows XP.
Windows XP SP1 provides the latest security, reliability, and performance updates to the Windows XP operating systems. This update is specially designed to resolve issues discovered by customers and to ensure Windows XP platform compatibility with newly released software and hardware.
Download SP1 for Windows XP to install all the previous Windows XP updates on your computer at once. Service Pack 1 for Windows XP comes with USB 2.0. support which provides huge speed improvements and compatibility with many devices as compared to USB 1.1. Combined with the right drivers SP1 makes Windows XP compatible with many many more peripherals in one sweep.