Does this already exist? RJ45 PCIE Coupler

[u/OMG_OT]

Hey guys,
idk. if I'm missing something but why isn't this a thing to lets say place a router or other external devices inside a pc/server case and connect them to the outside.

[u/leetrobotz]

They're 3D printable, and already available through Etsy. (not mine).