Protecting a motherboard from damage due to installation of...

Details Protecting a motherboard from damage due to installation of... Protecting a motherboard from damage due to installation of...

2006-03-28

2006-03-28

Deberadinis, Robert L. (Department: 2836)

Electrical transmission or interconnection systems

Switching systems

Switch actuation

C370S902000

Reexamination Certificate

active

07019419

ABSTRACT:
A motherboard is protected from burning or other damage caused by installation of card of a higher voltage than that for which the motherboard is designed, such as the installation of an AGP 2× graphics card in a motherboard designed for an AGP 4× graphics card. In the AGP example, a detection circuit determines whether the installed card is an AGP 2× or an AGP 4× graphics card. First and second power controlling circuits that control delivery of the DC power to the motherboard are either opened or closed based on whether and what type of card is installed. A switch may also be provided to control the passing of DC power through the first and second power controlling circuits. An alert unit, such as a light or buzzer, may also be provided to indicate the installation of a higher voltage card.

REFERENCES:
patent: 5613130 (1997-03-01), Teng et al.
patent: 5754870 (1998-05-01), Pollard et al.
patent: 6181118 (2001-01-01), Meehan et al.
patent: 6618264 (2003-09-01), Megason et al.

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