Ultron 2.5" Black2Safe Enclosure. Size: 63.5 mm (2.5 "), Hard drive interface: Serial ATA II. Interface: USB 2.0/eSATA. Compatible operating systems: Windows 2000/XP/Vista Mac 10.2 + Linux. Colour of product: Black. Dimensions (WxDxH): 132 x 85 x 15 mm, Weight: 130 g