| 摘要 |
An express card includes a plurality of detection pins, a plurality of power pins, a plurality of Universal Serial Bus (USB) interface pins, a plurality of Peripheral Component Interconnect Express (PCIE) interface pins, a plurality of expandable pins, and a power detection circuit. The power detection circuit includes a plurality of input terminals coupled to the plurality of power pins respectively, a power output terminal for providing the card power, and a control terminal for providing a control signal for enabling or disabling the plurality of expandable pins according to the detection result of the power detection circuit.
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