Yes I am familiar with that post @wsrrsw thanks.
I am talking about considering high end switches, like the M12, SR etc.
I am looking hard at the M12. Question: I see the special connections at the M12.
Their ethernet cords can have the M12 fitting on one end, and RJ45 on the other.
But what of the long run from my switch to my music rooms? Is there an adapter, or do I use a female -female junction on the end of their (expensive) cable going to my standard cable. Seems a downgrade in the path...Anyone have this?