I'm surprised there's any difference between 32U and 32D.

We have a board with a wroom-32U with a LAN8720 working ok. We just followed the LAN8720 design guidelines / reference designs and it worked. Never tried the board with a 32D through.

Yes those are the correct pins. Care must be taken on GPIO0 to on startup to prevent it booting into flash mode thugh.

Those are the pins I connected my LAN8720 to and it works ok. Take care with GPIO0 to prevent it entering flash mode accidentally from the clock input though.

Thanks, Better safe than sorry.

Jamie

Can anyone advise if it's safe to use a WROOM32-U without an external antenna connected? Can it be damaged?

Thanks

Jamie