
I have first and second it's my third case, they are perfect for portable pi projects. The Pro has room for Pi 4b with hat on and room for another hat attached via cable fans. Good tactile rubber mounts reduce noise and vibration, i have pi 3b+ in smarti pi 1, raspberry pi 4b 4g in smarti pi pro, have pi 4b 4g in smarti pi pro, with 4g/3g cellular network and AIS receiver for chartplotter functions as a backup of mine chart plotters on my boat

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