US Patent 7783464 Card for simulating peripheral component interconnect loads

A card for simulating peripheral component interconnect (PCI) loads includes an interface configured for electrically connecting to a motherboard and a load circuit configured for simulating the different loads. The load circuit comprises at least one power module receiving a voltage from the interface. The power module is capable of changing resistance of the power module thereby to thermally consume various powers to simulate the different loads. Because the card consumes various power according to testing requirement, the stability of the motherboard can be tested in various load power without connecting actual PCI loads to the motherboard.