Printer is a HP 600 series laserjet - the port in router doesn’t recognize it. My previous router the older router was fine
Have you first tried powercycling / re-starting the router ? No joy ? Try hard resetting the device to factory defaults by pressing and holding in the recessed reset button on the rear for 30 seconds. You will lose any customized settings.
Does the printer ethernet port work when it is plugged directly into a PC? Maybe the new card in the printer isn't configured properly.