MANHATTAN 161572 10-Port USB 2.0 Desktop Hub Type: USB Standards: USB 2.0/1.1 Ports: (1) upstream port, Standard-B (10) downstream ports, Standard-A Transfer Rate: 1.5/12/480Mbps Power Input: 5V DC Operating System Supported: Windows 2000/XP/Vista/7/8 or Mac OS 9 or above Dimensions: 7.5 (h) x 1.5 (w) x 0.8 (d) in. Weight: 0.5 oz.