Too often these days it means some no-name manufacture in China has printed up a bunch of labels with those symbols on it.
I'm not sure if this is really true. Companies which ship power supplies with their products want to see traceable agency certifications/approvals (CB reports). I can't imagine that there are too many which will turn a blind eye to that. I'm also not convinced it's even in the power supply manufacturer's interest to slap fake approvals on their products. I imagine they could get in some pretty serious trouble for that.
De
I haven't seen one (that I know of) shipped with a reputable product, but there are countless no-name widgets available direct form China that have fake markings on them. Some are outright counterfeit passed off as genuine Apple, Samsung, etc. If you buy a $2 wall wart from China there's a good chance it will not have actually passed UL and similar testing.
Well. I got curious. My brother bought an insanely cheap 90W adapter on Ebay several years ago. I believe it stopped working. (Big surprise!)
On the outside, we see a bunch of markings, but they're all basically meaningless. There is an FCC mark, but that's just a declaration of conformity, similar to the CE mark. By themselves, they don't really mean much. If they are claiming FCC conformity, per Part 15, one glimpse at the inside reveals that would be complete BS.
Not a single line filtering component in sight! No X-Cap, no common-mode-chokes (on input or output), no MOV, and just one dinky fuse! Craziness. One lightning event and this thing is toast.
And the PCB is such poor quality that it snapped in half upon opening.
I guess this is what you were talking about! I wonder how many of these they sell?