| 摘要 |
A USB (Universal Serial Bus) Hub is comprised of a device for showing the transmission rate of data therein, and the obtained result of the device can be shown via a lamp signal. By virtue of this device, enable users to judge if the peripheral devices connected by a hub in series and the transmission speed of data between host computers are matching suitably, and a peripheral device with the same transmission rate can be replaced so as to prevent a jam from being occurred during data transmission.
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