Patent ID: 7480835

Claim:
A testing system for a link control card (LCC) of a storage device comprising: a host; a LCC comprising two terminals, one of the terminals being connected to the host, signals transmitted from the host to the LCC; a middle plane (MP) comprising two terminals, one of the terminals being connected to the other one of the terminals of the LCC; and a testing device being connected to the other one of the terminals of the MP, the host being connected to the testing device for sending out commands and receiving results, the testing device comprising: a micro-controller unit (MCU); a connector being connected to the MCU for receiving the signals; a hub being connected to the connector for testing the received signals; a voltage margin control unit being connected to the MCU for controlling a voltage margin of a voltage supplied by the MP to the LCC; an address setting unit being connected to the MCU; and a first interface being connected to the MCU for outputting results.