Patent ID: 8745297

Claim:
A load card for testing different types of PCI slots, each type of the PCI slot having two working voltages, the load card comprising: a plurality of gold fingers, each gold finger corresponds to one type of the PCI slots, and each gold finger having two power pins to receive the two working voltages of a corresponding PCI slot respectively; a plurality of voltage ports, wherein each voltage port connects to one power pin of one of the plurality of the gold fingers and receives a working voltage when the one gold finger connects to one PCI slot working at the working voltage; and a plurality of resistor selection circuits, each of which is connected to one of the voltage ports; wherein, each of the resistor selection circuits further comprises: a path switch comprising a control terminal, a first path terminal, and a second path terminal which is grounded; an operable switch comprising a first connection terminal, a second connection terminal, a third connection terminal, and a fourth connection terminal, wherein, the first connection terminal is connected to corresponding voltage port, the second connection terminal is connected to the control terminal of the path switch, the third connection terminal and the fourth connection terminal are opened; a resistor connected between the voltage port and the first path terminal of the path switch and configured to test one of the PCI slots working at one working voltage; and a temperature sensor connected to the resistor, configured to detect the temperature of the resistor; wherein, each resistor selection circuit switches between an enabled state and a disabled state, when one of the PCI slots working at a working voltage is to be tested, the gold finger connects to the PCI slot, the corresponding voltage port receives the working voltage, and the resistor selection circuit comprising the resistor to test the PCI slot working at the working voltage is enabled and other resistor selection circuits are disabled, in response to the user operation.