DEC equipment had something similar. A 6 pin "MMJ" connector. It almost looks like RJ45 except the clip was off center. I also remember some 90's terminal serv

DEC equipment had something similar. A 6 pin "MMJ" connector. It almost looks like RJ45 except the clip was off center. I also remember some 90's terminal servers that had enormous "octopus" cables. There was a single connector on the box that broke out to 8 to 16-ish DB25 serial ports.