some people are waiting now the Uptone EtherRegen switch. It was done on the model of the cisco 2960 switch, from what i read.
I wonder if it will be really better vs the 2960. price: 640 dollars.
It’s hard to comment without a proper schematic, but I am sure it’s effective enough.
Of course this if focussing on the serial voltage decoupling at the physical layer, what it doesn’t appear to address is Ethernet data broadcast and ARP processing isolation which arguably is just if not more important.