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4 Ports USB hub 1.Expand for USB port,supply up to 500mA current per port. 2.Adopt the second age USB controller. 3.No external power supply. 4.Driveless.hot plug&play. 5.Internal over current protection circuits. 6.Support USB 1.0/1.1.Compatible USB2.0,full speed up to 480Mbps. 7.Design with super streamline&mini. 8.Support OS:Win 95 OSR2/98SE/ME/2000/XP,Linux 2.4 and Mac OS8.5 or over version. 9.Chains up to 127 USB drive. 10.Weight: Packing 100pcs/ctn G.W.:
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