This Microsoft Windows XP Pro and Disk Service Pack 2 is a great addition to your software collection. It is compatible with Microsoft Windows XP operating systems and comes in CD format with English language. The minimum hard drive space required is 1.5 GB, minimum RAM is 64 MB and minimum processor speed is 256 MHz. It is made in the United States and can be installed in one device. Please note that this item is untested and sold as is without a key.