| 摘要 |
A circuit board is used in common for the first electronic apparatus as the first configuration and for the second electronic apparatus as the second configuration, and the circuit board includes an area which is used in common for installing the first electronic device in installing the circuit board into the first electronic apparatus, and for installing the second electronic device in installing the circuit board into the second electronic apparatus, wherein the first electronic device is used only for the first electronic apparatus, and the second electronic device is used only for the second electronic apparatus.
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