The specific introduction of the fiber media converter  indicator:
The fiber media converter  has a total of 6 lights, two columns of vertical lights, the three lights near the patch cord are the indicator lights for the fiber, and the 3 lights near the network cable  are responsible for the network cable.

PWR: The light is on, indicating that the DC5V power supply is working normally
FX 100: The light is on, indicating that the optical fiber transmission rate is 100Mbps
FX Link/Act: Long light indicates that the optical fiber link is connected correctly; flashing light indicates that data is being transmitted in the optical fiber
FDX: Light on means that the optical fiber transmits data in full duplex mode
TX 100: The light is on, indicating that the transmission rate of the twisted pair cable is 100Mbps
When the light is off, the transmission rate of the twisted pair cable is 10Mbps
TX Link/Act: Long light indicates that the twisted pair link is properly connected; flashing light indicates that data is being transmitted in the twisted pair

Remark:
1. There is no communication between the fiber optic transceiver and the switch. Please check whether the network cable between the two (generally it should not be long) is plugged in. The other end of the transceiver network cable cannot be connected to the switch UPLink (relay port). Connected to the ordinary mouth;
2. Pay attention to whether the connection has poor contact.