Netgear GS108LP switch not working

Hi, I’ve bought a Netgear GS108LP and it seems that it isn’t working correctly. As you can see in the video, when I power the switch on, the right LEDs (PoE Mode) flash yellow for about 1 second, but the left LEDs (Link/ACT Mode) don’t show anything. The cable connected to port 1 is directly connected to my router and the...