usb 2.0 hub 4 ports 1.Led Light 4 port USB HUB 2.Convenient to carry 3.USB1.1/USB2 ... USB port into several so that there are more ports available to connect devices to a host system. ... Max Devices Supported: 127 (when daisy-chaining hubs together)7. System Requirements: 486, Pentium, or Compatible Computer with USB ... 95 Rev B, 98, 2000, ME, XP, Vista, 7, Mac OS X, and Linux OS8. Economize on energy, ...