The G-Technology 6TB G-Drive is a high-performance external hard drive with USB (Universal Serial Bus) 3.0 & Thunderbolt interface. This high-capacity hard drive is perfect storage-intensive applications like audio/video editing, digital photography, music libraries, & high-speed data backup. The G-drive with all-aluminium enclosure features an integrated heat-system to ensure the G-drive is cool & quiet. The G-Technology 4TB External Hard Drive is compatible with Windows & is plug-&-play on Mac OS X & ready to use with Time Machine.