
They were loaded with a micronucleus and configured to work with USB. Just a note, if you want to use the pb5 as a gpio you can use usbtiny to reset the fuses, but you'll need a HV programmer to get it back. For that, these are great.

Vilros Raspberry Pi 4 4GB Complete Starter Kit - Black Fan-Cooled Aluminum Case for Heavy-Duty Performance
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