3
One upstream port and four ( #29508) or seven (#29509) downstream ports
Removable aluminum bas e can be hard-mounted to your desk
Slim design saves space on your desktop Connect up to 127 USB devices by daisy-chaining hubs
Fully compatible with USB 2. 0 Specification
Fully backward Compatible with USB 1.1 Specification
Supports transfer rates of up to 480 Mbps
AC power supply included
Downstream ports have aut omatic connect and speed detection function plus over-current protection with
auto recovery
Supports Windows 98SE/20 00/ME/XP/Vista/7 and Mac OS X or higher