Dell Latitude D830 160GB 2.5" SATA Hard Drive with Caddy, XP and Drivers Preinstalled Preinstalled Operating System: Windows XP Professional SP3 Most Common Drivers Installed, Alternative Drivers Saved on HD It is the buyer's responsibility to have a Product Key for the installed operating system Comes with instructions on how to install hard drive and put in your product key Made for the Dell Latitude D830 laptop only