This is the fastest upgrade kit for the 2007 Apple Mac Pro 2.1 This kit comes with everything you will need to turn your Mac Pro into a 3GHz Eight core system. Includes: If you have not upgraded to the 2.1 firmware, you will need to do so. Please just ask and we'll send you the link to download the firmware and also a link to a youtube video showing the upgrade. It's very easy. Also here is a link to all of our Mac Pro 1.1 and 2.1 CPU upgrade kits: http://www.ebay.com/sch/m.html?_ssn=friendlycomputersusa&_armrs=1&_from=R40&_sacat=0&_nkw=mac+pro+1.1&_sop=15 Please let us know if you have any questions. ________________________________________________________________ Warranty and other info: We give a one month warranty (upon shipping arrival) on all of our items which is long enough to have it installed and know that it is working perfectly. If for some reason the product becomes faulty after this date, we will still work with you on a solution. Friendly Computers USA can not be responsible for any damages or other losses caused by the use of, or installation of the product. It is also the buyers responsibility to do any research (if needed) to insure a smooth hardware installation. U.S. and International Customers: Once payment is received, your item will be shipped via USPS. Just enter your shipping info into the shipping calculator. Thanks! Sellers: Delight buyers. Get your own map of past buyers.