3-Port USB 2.0 In-Desk Hub, Manhattan 161077, UH2-I03 Type: USB Standards: USB 2.0 Ports: 3 x USB 2.0 Transfer Rate: 480 Mbps Operating System Supported: Windows 2000/XP/Vista/Windows 7; Mac OS 9 or above Dimensions: 69 x 69 x 23 mm (2.7 x 2.7 x 0.9 in.) Color: Black