DUB-1040, 4-port Pocket USB 2.0 HUB, Upstream USB Type A (male), 4 downstream USB Type A (female), USB 2.0 Speed - Mac OS X 10.4.6 with USB 2.0 support, Microsoft Windows XP/Vista/7 with USB 2.0 support, USB 1.x Speed - Mac OS 10.4.6 or above with USB 1.x support, Microsoft Windows XP/Vista/7 with USB 1.x support, Supports high-speed 480Mbps transfer rate
