Not seeing UL or ETL or FCC certification on those Apple A3365 chargers. Not finding Apple's own Declaration of Conformity for that product.[1]

Anyone know the switching frequency?

[1] https://regulatoryinfo.apple.com/en/eurocompliance

You can see the UL logo on the label of the charger on the first picture on the product page. I have no idea about the EU version, I live in the United States.

https://www.apple.com/shop/product/MGKN4AM/A/40w-dynamic-pow...