• Formatted for Mac out of the box and instantly compatible with Time Machine software


• Impressive 500 GB storage capacity


• 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 HFS+ driver for PC and use the drive interchangeably between Mac computers and PC's


• Features USB 2.0 for quick data transfer rates; upgrade to Thunderbolt or USB 3.0 with the available additional adapter


• Keep copies of your files, in case disaster strikes

http://www.seagate.com/support/external-hard-drives/portable-hard-drives/backup-plus-mac-usm/#specs

http://www.amazon.com/Seagate-Backup-Portable-External-STBW500100/dp/B00829TIA4