I have RB951 the ports keeps running without cable Ethernet cable connected to it.
I have using Netinstall but not sort it out. What to do to resolve the issue?

What to do to resolve the issue?

Throw RB951 in trash can?

try clean contact with alcohol... but maybe it's time to change

What to do to resolve the issue?

Throw RB951 in trash can?

This is not possible as we have received new package that faced the same thing. Like 5pcs in box

Maybe new package, but from the looks of the one in the picture not new devices.

From the screenshot, ether4 transmits something but doesn't receive anything (and this could be - though I cannot imagine how - some false contact or the like mistaking an empty port for a connected one) but ether2 transmits AND receives *something*, which is not possible, the received packets should come from somewhere.

Post your full configuration of the device, following this:
viewtopic.php?t=203686#p1051720

Check also your log, there could be there something about the connections (link up or down) of the ports.

I believe OP connected computer to ether2 in moment of screenshot, that's why there is tx/rx on it.
I had at least 2 devices with blown out ethernet ports, with the same symptoms. Switch chip itself was OK, only input transformer was damaged.