Perhaps my experience on the Raspberry Pi 4B 8GB will be of some use to others. FIrst, I had wanted to use a passively cooled case (aluminum) without a fan to conserve battery power in at remote locations that could also be mounted to my dovetail bar. That worked fine. Then I wanted to use USB 3.0 thumb drives and SSD. Bad combination. The metal case weakened the signal, then the USB 3.0 port completely jammed whatever signal was left. I got it to work using a USB Wifi Adapter (Panda PAU06 or PAUO9) in the 5GHz band, but the range was still limited to less than 50 feet through one exterior wall, and was somewhat unreliable. You may need to disable the Raspberry's on-board wifi, or at least use the network configuration tool to specify which adapter should be used. I was able to run the wifi adapter from either the USB 2.0 ports on the Raspberry Pi, or from a powered USB hub. It seemed to work better plugged directly into the Pi, perhaps because there was less 2.4GHz interference on the USB 2.0 ports. Now I'm thinking to ditch the aluminum case in favor of plastic one with a fan so that I can get better wifi performance.

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