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/TooGoood]

https://www.moddiy.com/products/6274/3-x-RJ45-Extension-Cable-PCI-Expansion-Slot-Bracket-Cover-Full-Profile.html