iTEC MYSAFE35UFWE. Size: 88.9 mm (3.5 "), Hard drive interface: Serial ATA, Serial ATA II. Interface: FireWire, USB 2.0, eSATA. Compatible operating systems: Windows 7 32/64bit, Windows Vista 32/64bit, Windows XP, Mac OS. Power requirements: +5/12V 2A. Material: Aluminium, Metal