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Q1:Which GPIO can be used after use the CM4 to CM3 Adapter?
A: CM3 has 46 GPIOs, ranging from GPIO0~GPIO45; while CM4 has only 28 GPIOs, ranging from GPIO0~GPIO27; so if you want to use CM4 to replace CM3, GPIO can only use GPIO0~GPIO27, because CM4 has only 28 GPIO,please refer to the datasheet of CM4 and CM3, thanks!
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