I have the first and the second. This is my third case. They are perfect for portable Pi projects. The pros have a place for a pi 4b with a hat on it and a place for another hat connected via wires, the fan feels nice, rubber mounts reduce noise and vibration, i have pi 3b+ in smarti pi 1, raspberry pi 4 b 4g in smarti pi pro, there is pi 4b 4g in smarti pi pro, with 4g/3g mobile network and an AIS receiver for chartplotter serve as backup for my chartplotter on my boat
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