Guess this is common. https://leadertechinc.com/ferrite-cable-shielding/special-purpose-shielding-bar-2/
The engineer in me now wonders if one is on the bottom also. On Wed, Jun 19, 2024, 1:32 PM Forrest Christian (List Account) < li...@packetflux.com> wrote: > I'm guessing some sort of ferrite for emi/emc shielding. Not 100% sure > as I've never seen or heard of it being deployed this way. > > Is it rubbery or more like hard compressed pieces. I.E dried out licorice > (rubbery) vs smarties (compressed sugar)? If it's hard and seems like > compressed powder that's more like ferrite. > > Either way, I'm guessing it's fine. Looks more like a CYA or pass FCC > test type of thing. > > On Wed, Jun 19, 2024, 12:08 PM <dmmoff...@gmail.com> wrote: > >> I received a used Arista switch, and I noticed it rattled. I opened the >> cover and dumped out this grey debris. I looked on the circuit board and I >> see the stuff clearly came from some kind of border around the switch’s >> ASIC. >> >> >> >> What is this stuff? >> >> >> >> Is the switch likely to operate without it? >> >> >> >> -Adam >> >> >> -- >> AF mailing list >> AF@af.afmug.com >> http://af.afmug.com/mailman/listinfo/af_af.afmug.com >> >
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