I said think of it like. it does - not that it actually does
the radio frequency used has low penetration ,,, and as such you have to imagine a line from router to machine - and consider what's in between
a pci card is generally stuffed into the back of a PC which is made of metal
on a lappy it's at the side of the screen ... covered in plastic
wireless is 60% magic ... if you have reception fine ... but there are so many external things that can mess it up
I've once had a laptop that intermittently wouldn't work on the left side of a desk ... but was fine anywhere else in the room
it turned out to be a "noisy" phone charger
you can't beat a length of wire - if the router sits on the box ... use a cable ... far more reliable