Patent ID: 7227958

Claim:
A connector device connecting a first information-handling apparatus and a second information-handling apparatus, comprising: a common jack connected to the first information-handling apparatus; a plug connected to the second information-handling apparatus, the plug adapted for insertion into the common jack, the plug comprising a first conductive surface and a ground contact, the first conductive surface arranged substantially neighboring to a tip end of the plug; a first jack contact formed on the common jack for receiving communication signals when engaging with the first conductive surface of the plug; a memory buffer for receiving the communication signals through the first jack contact, and sending out the communication signals to the first information-handling apparatus when the memory buffer is not empty; and a control circuit electrically connected to the memory buffer for monitoring a status of the memory buffer, wherein when the memory buffer is not empty, the control circuit determines that the plug is inserted into the common jack, and when the memory buffer is empty, the control circuit determines that the plug is removed from the common jack.