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Xfinity XB3 hardware mod: Disable WiFi and save 2 watts

Xfinity XB3 hardware mod: Disable WiFi and save 2 watts - xb3_disable_wifi.md

There are 6 screws (2 hidden), lots of plastic prying, and you will probably wrinkle the rear sticker. It measures 3.3 volts, and when I connect it directly to ground, it sinks negligible current. I don't actually know what circuit pulls up the EN pin, so it's possible that I'm overloading a digital output somewhere.

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