| 摘要 |
A printed circuit board includes a rigid substrate having a card edge connector part connected to a host board, a primary signal line configured to be connected to the card edge connector part on the rigid substrate, a connection pad configured to be connected to the primary signal line at an edge that is opposite to another edge to which the card edge connector part is connected and the connection pad is electrically connected to another substrate, and a lead wiring connected to the connection pad.
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