Fiber optic transceivers have a variety of different categories, and the actual use of most of the attention is according to the different categories of fiber optic transceivers: SC connector fiber transceivers and FC/ST connector fiber transceivers.

When using fiber optic transceivers to connect to different devices, you must be careful to use different ports.

1. Connection of optical fiber transceivers to 100Base-TX devices (switches, hubs):

Confirm that the length of the twisted-pair wire should not exceed 100 meters;

Connect one end of the twisted pair to RJ-45 port (Uplink port) of the fiber optic transceiver and the other end to RJ-45 port (common port) of 100Base-TX device (switch, hub).

2. Connection of optical fiber transceiver to 100Base-TX device (network card):

Confirm that the length of the twisted-pair wire should not exceed 100 meters;

Connect one end of the twisted pair to RJ-45 port (100Base-TX port) of the fiber optic transceiver and the other end to RJ-45 port of the network card.

3. Connection of optical fiber transceiver to 100Base-FX:

Make sure the length of optical fiber is not beyond the distance provided by the equipment;

One end of the optical fiber is connected with the SC/FC/ST connector of the optical fiber transceiver and the other end is connected with the SC/ST connector of the 100BASE-FX device.

In addition, it is necessary to add that many users think that when using fiber transceivers: as long as the length of the fiber is within the maximum distance that single-mode fiber or multi-mode fiber can support, it can be used normally. In fact, this is a wrong understanding, this understanding is only true when the connected devices are full duplex equipment, when there is half-duplex equipment, and the transmission distance of the optical fiber has a certain limit.