Which of the following describes the 25 or 9 pin connector with male pins on the back of a laptop computer?（）A、Parallel portB、Serial portC、IEEE 1394 portD、USB port
Which of the following describes the 25 or 9 pin connector with male pins on the back of a laptop computer?（）
- A、Parallel port
- B、Serial port
- C、IEEE 1394 port
- D、USB port
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