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A: We tested the [[https://www.raspberrypi.com/products/poe-plus-hat/ Official Raspberry Pi4 POE+ Hat]] and it can be compatible, but the cooling fan did not work, probably due to the OS configuration. If you are interested, you can also test it and look forward to your sharing of your suggestions.
[[File:X1501-POE+Hat-2.jpg|800px]]
[[File:X1501-POE+Hat-1.jpg|800px]]
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