Cables Unlimited USB 2.0 4-Port Hub (USB-1810) Support up to 127 devices Supports High Speed Data Transfer Rates of up to 480 Mbps 40 Times Faster Than The Original USB Four downstream ports can handle high-Speed(480Mbps), full-speed(12Mbps) Support up to 127 devices Supports High Speed Data Transfer Rates of up to 480 Mbps 40 Times Faster Than The Original USB Four downstream ports can handle high-Speed(480Mbps), full-speed(12Mbps) Window 98se/2000/XP/Vista MAC 10+