Description:Color: BlueUSB Interface: 4 PortSize: 55 x 40 x 21mm(LxWxH)Wight: 0.038kgUSB: USB 2.0 Version specification， Support USB 1.1 Version SpecificationTransmission speed: 480MbP\/sUSB line: 61cmPower adapter: NoSystem supports: Windows XP\/Vista\/7;Mac OS 9.0 or later(No driver needed)
Package Included:1 x USB HUB
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