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TUSB4020BI: USB_DN2可以识别成高速480M,但是USB_DN1不识别,能识别12M

Part Number: TUSB4020BI

接入U盘,USB_DN2可以识别成高速480M,但是USB_DN1不识别,但是插入鼠标或者其他设备,可以识别成12M设备