My router's ethernet no longer works!

It had been fine and then nothing was connected, no clients no Internet.

The WiFi is working just fine.

The router has been cycled, reset and reconfigured.

Connection LED is lite, all ports tested without success.

Cable has been tested, tests good.

Computers that have no connection are;

2 different HP Desktops

HP Printer

2 Raspberry Pis

3 TVs

Bridge used has been replaced and tests good.

The two computers have been seperately tested with different good cables directly to the router.

S/N 22193X2000602 purchased May 19, 2022

Help please!!

Thanks in advance for the excellent assistance I know I will get.

Ken