I think they have been extra to pass the CE / FCC certification. They are guarding against electromagnetic some A part of the circuit such as the power phase about the motherboard and also the I/O board (perhaps power also) on the CM3 adaptation board. At this moment, the https://financefeeds.com/broctagon-and-autochartist-team-up-to-boost-broker-success-with-free-educational-and-signal-resources/