StarTech.com PEXUSB400, USB, 1.76 oz (50 g), 1.48" (37.5 mm), 6.89" (175 mm), 5.41" (137.5 mm), Windows 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2,... StarTech.com PEXUSB400. Host interface: USB. Weight: 1.76 oz (50 g). Package width: 1.48" (37.5 mm), Package depth: 6.89" (175 mm), Package height: 5.41" (137.5 mm). Compatible operating systems: Windows 2000/ XP(32/64bit)/ Server 2003(32/64bit)/ Vista(32/64bit)/ 7(32/64bit)/ Server 2008 R2,...