They will work with any switch, but only at 10Mbit. It merely depends upon how brain dead your network switch is. If it's a decent one then without being able to negotiate the connection it should default to 10Mbit, which is what the old 10BaseT hubs ran at.
I had my SE/30 connected to a gigabit switch with no issues.
Just picked up a 128k with a monster Mac conversion, complete with carrying bag, keyboard mouse and system disks.
Checkerboard screen so will clean and recap. Any idea what the black thing is that’s only connected to power on the power board but nowhere else? It’s Velcro’d in ...