| 摘要 |
A debug card includes a connector, a driving circuit, a switching circuit, and a testing circuit. The connector is connected to an expansion slot of a motherboard. The switching circuit is connected between the connector and the testing circuit to select data channels between the connector and the testing circuit through a low level signal or a high level signal received by a ground pin of the connector. The driving circuit is connected to the connector, the switching circuit, and the testing circuit, to provide voltages to the switching circuit and the testing circuit through the connector and the expansion slot.
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