| 摘要 |
An input/output (I/O) device is provided. The I/O device is capable of operating in a first mode or a second mode. The I/O device includes a first connection unit and a switch unit. The first connection unit has a plurality of down-link I/O ports and an up-link I/O port. The switch unit is controlled by a selection signal. The switch unit has an input terminal coupled to the up-link I/O port, a first output terminal, and a second output terminal. When the I/O device is operating in the first mode, the switch unit couples the input terminal to the first output terminal according to the selection signal. When the I/O device is operating in the second mode, the switch unit couples the input terminal to the second output terminal according to the selection signal.
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