Burnin, do all the board's chips share the same 32-bit nonce range? How often can work be restarted?
Every chain of chips works on a single 32bit range.
Work can be aborted at any time.
Thought FCC guidelines were to resolve interference issue with other electronic components not mitigate against potential heath risks. FCC and FDA are different

Contrary to all my competitors I do take EMC seriously and designed these boards to be compliant. (which did increase price)
Emission testing is scheduled for next week, but the Lab hasn't yet confirmed my appointment.
The boards will be tested against EN55022.