Seagate Backup Plus 1TB Portable External Hard Drive USB 3.0 (Blue)(STBU1000102) Keep copies of your precious digital files, in case disaster strikes Remove the top cover to access the thunderbolt port Save feature enables user-generated content to be backed up from your favorite social network Share feature allows multiple files to be uploaded to social networks at once from your computer Install the pre-loaded NTFS driver for Mac and use the drive interchangeably between PC and Mac computers without reformatting Features USB 3.0 for quick data transfer rates; upgrade to Thunderbolt technology or FireWire 800 with the available additional adapter