Patent ID: 7439868

Claim:
A circuit for indicating status of a component of a computer system, comprising: a first indicator comprising a positive end and a negative end; a second indicator comprising a positive end connected with the negative end of the first indicator, and a negative end connected with the positive end of the first indicator; a power supply connected to the positive end of the first indicator via a first resistor, and connected to the positive end of the second indicator via a second resistor; a first transistor connected between the negative end of the first indicator and a ground; and a second transistor connected between the negative end of the second indicator and the ground; wherein a drain of the first transistor is connected to a negative end of the first indicator, a source of the first transistor is connected to the ground, a gate of the first transistor is connected to a first control signal, and a drain of the second transistor is connected to the negative end of the second indicator, a source of the second transistor is connected to ground, a gate of the second transistor connected to a second control signal.