Ultron Blacksafe USB 2.0 SATA 2.5". Size: 63.5 mm (2.5 "), Hard drive interface: Serial ATA. Interface: USB 2.0. Compatible operating systems: Windows 2000 (SP4+), Windows Server 2003, XP 32/64 bit (SP1+), Vista 32/64 bit. Colour of product: Black, Silver