Arduino Nano disconnecting from PC on plugging in 3.3v NRF24L01 into PCB - Electrical Engineering Stack Exchange

I've built this PCB which includes two I2C port expanders, an Arduino nano, inputs for buttons and encoders, and headers to plug in an NRF24L01 board. Currently, I just have code running to read two

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Arduino Nano disconnecting from PC on plugging in 3.3v NRF24L01 into PCB - Electrical Engineering Stack Exchange

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mosfet - Arduino Nano in PCB for a controlled heating rig - Can't get it to work - Electrical Engineering Stack Exchange

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mosfet - Arduino Nano in PCB for a controlled heating rig - Can't get it to work - Electrical Engineering Stack Exchange

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mosfet - Arduino Nano in PCB for a controlled heating rig - Can't get it to work - Electrical Engineering Stack Exchange

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