Yeah seems fake, it'd be easy to find a random circuit board and then use a laser engraving machine to put some text on the metal. Or even do it in after-editing

And as seven7s pointed out it matches the outputs on the back of a common router.

And if they were doing this big secret thing, why would they print it on the circuit board for anyone to read?

Interesting post if true, but it looks like fortunately it's faked for youtube views.