Patent ID: 8385168

Claim:
A measuring apparatus for a hard disk driver (HDD), the measuring apparatus comprising: a first connector to be connected to a second connector that is connected to a storage controller of a motherboard; a control circuit to receive voltage signals from the storage controller through the first and the second connectors and convert the received voltage signals to hard disk drive (HDD) power signals; a detecting circuit comprising an AND gate and first to fourth resistors, wherein a first input terminal of the AND gate is grounded through the first resistor and connected to the control circuit through the second resistor, a second input terminal of the AND gate is grounded through the third resistor and connected to the control circuit through the fourth resistor, an output terminal of the AND gate is connected to a measuring pin of the first connector, the AND gate receives the HDD power signals from the control circuit through the first and the second input terminals of the AND gate and outputs a power good (PWG) signal to the measuring pin of the first connector to be measured.