C2G C2G54464. Host interface: USB 2.0, Hub interfaces: Micro-USB, USB 2.0. Data transfer rate: 480 Mbit/s, Product color: Black, Housing material: Acrylonitrile butadiene styrene (ABS). Input voltage: 5 V, Input current: 3 A. Windows operating systems supported: Windows 2000, Windows 7, Windows 8, Windows 98SE, Windows ME, Windows Vista, Windows XP, Mac operating systems supported: Mac OS X 10.8 Mountain Lion. Weight: 6.35 oz (180 g)