| 摘要 |
PROBLEM TO BE SOLVED: To provide a circuit board capable of efficiently preventing erroneous insertion of a connector thereinto.SOLUTION: A circuit board comprises: signal pin holes for signal transmission which are disposed at positions corresponding to signal pins for the signal transmission of a connector; ground vias which are disposed at positions corresponding to ground pins of the connector; dummy vias into which the signal pins and the ground pins are not inserted and which are connected to ground; and at least one prevention section which is provided in a row of the dummy vias and prevents insertion of the signal pins and the ground pins. |
