Seagate GoFlex Desk 3TB External Hard Drive for Mac in Black with Thunderbolt Adapter STBC3000102 GoFlex Desk Thunderbolt Adapter included Lets you take full advantage of your Mac computer's Time Machine software so you can automatically save and easily recover up-to-date copies of everything on your Mac Use the drive on a Mac and PC computer interchangeably without reformatting 3-year limited warranty