Fantom G-Force 1 TB USB 2.0/eSATA  Desktop External Hard Drive GF1000EU Host Interface: eSATA\USB 2.0 Bus Transfer Rate (Maximum): 60 MB/S (USB), 150MB/S (eSATA) Access Time: 8.5 ms OS Support: Windows 2000, Windows XP, Windows 2003, Windows Vista, Mac OS X v10.2 & greater Package Contents: Fantom Drive G-Force 1TB eSATA / USB 2.0 Hard Drive, USB 2.0 Cable, Power Cord, User Manual