Conceptronic C4USB2, USB 2.0, 480 Mbit/s, Black, 100 - 240 V, Windows XP, Windows Vista, Windows 7, 1.97" (50 mm) Conceptronic C4USB2. Hub interfaces: USB 2.0. Data transfer rate: 480 Mbit/s, Product color: Black. Input voltage: 100 - 240 V. Compatible operating systems: Windows XP, Windows Vista, Windows 7. Width: 1.97" (50 mm), Depth: 3.94" (100 mm), Height: 0.787" (20 mm)