Wow. That switching fabric is so much smaller than the HIPPI crossbar backplanes we used in the 100baseT/pre-GigE switches that I used to write firmware for... almost 20 years ago now. Of course, complexity means higher cost, so it's obvious why nobody bought our stuff. Hopefully, this open hardware project will have better luck!

/* it's easy to forget just how many iterations of Moore's Law have happened since the mid-90s */