... 480Mbps 2).backwardly Compatible with USB 1.1 New 4ports usb hub with cable Feature:4port usb hubCompact and robust design, ... power expenditureSuitable for Flash , card reader , usb mouse, usb keyboard . scanner , digital camera and vidicon , usb sound card , HDD enclosure ext.Extend to ... port is 500ma.Adopt the second generation usb hub controller and no driver is requried.Support no more than 127usb ...