mostly like no but I am sure someone will prove me wrong

The ETD puts out pixelnet and not ethernet packets. If the switch/hub does any error checking and or boost the signal it won't work.
You just need two RJ-45 jacks connected together.
Take a spare SSR4 board with nothing on it but the two RJ-45 jacks
Take 2 RJ-45 jacks and a short piece of cat5 cable and solder the wires to the pins (pin 1 to pin 1, pin 2 to pin 2, etc)
If you have a hub/switch laying around you can test it yourself. Just don't plug it into an outlet for power.
Connect a cable from a working network port and plug into one port on your unpowered switch. Then take a second cable from that hub (unpowered) and plug into something that will show active (laptop) If you see a connection and or lights flashing on the socket then you can use it.
clear as mud?
Rick R.
(hmm, did I just counter point myself??)