mikrotik 4011 not all ports leds are blinking

Hi, i have a problem with my mikrotik 4011

when ethernet cable plug-in in port eth2 or eth7 green leds are not blinking, but connection is working.
If plug-in cable in other ports then i can see the green led
in connection i use the same cable.
What is it ??

Broken?

It does sound like there is a fault with the hardware there with the LED’s being vertically stacked, bad track on the board probably.