Product Manual
Page 13
...flashes when the Switch is providing standard 48V power to the default configuration and all fans work fine and the red light indicates that means the system might have crashed or firmware upgrade has failed. Port LED (1-20, 21T~24T): The port LED will indicate Link/Act of this port. DGS-1224TP 24 ...Port 10/100/1000BaseT PoE with 4 Combo SFP Smart Switch Front Panel ...
...flashes when the Switch is providing standard 48V power to the default configuration and all fans work fine and the red light indicates that means the system might have crashed or firmware upgrade has failed. Port LED (1-20, 21T~24T): The port LED will indicate Link/Act of this port. DGS-1224TP 24 ...Port 10/100/1000BaseT PoE with 4 Combo SFP Smart Switch Front Panel ...