Hamlet HXD3CCUES. Size: 88.9 mm (3.5 "), Hard drive interface: IDE/ATA. Interface: eSATA, USB2.0, Cables included: USB eSATA. Compatible operating systems: Windows 98SE/ME/2000/XP/Vista Mac OSX 9+ Linux Kernel 2.4.18+. Power requirements: AC 100-240V, 50-60hz