Fantom Drives 2TB Greendrive3 64MB Cache USB 3.0 External Hard Drive (GD2000U3A) Fantom GreenDrive3 USB 3.0 External Hard Drives offer an affordable and reliable storage solution for USB enabled PC's and Macs. For Mac compatibility this Hard Drive requires reformatting. Refer to Application Guide for guidance on this The GreenDrive family of external hard drives feature a sturdy aluminum casing for maximum durability. High Performance Transfers Fantom Drives GreenDrive3 USB 3.0 hard drive is backwards compatible with USB 2.0. The GreenDrive3 offers plug and play simplicity as well as its rugged features provide optimal storage for all your photos, music, Fan-free design for virtually silent operation and can be stored horizontally or vertically to optimize your work space. Represents the pinnacle of host connectivity allowing transfer rates up to 10 times the rate of USB 2.0. The GreenDrive3 offers plug and play simplicity as well as its rugged features provide videos and documents in one convenient place.