... deviceA new design, more halfback more fashion. 4PORT on high-speed USB 2.0, exterior design is very beautiful, beautiful ... devices non-interference. Using the high performance chip, support USB2.0 transmission, external equipment transmission more stable, fast.Product name modelName: ... expanded four USB 2.0 portTrain USB 2.0 high-speed transmission, decentralization in USB 1.1Train without driver, ...