The optical transceiver is a device that must be used in the light networking process. There are many types of optical transceivers. Generally, the optical transceivers are selected according to the type of the optical interface according to the actual project. Then the following Fiber Closure manufacturers will share the precautions when choosing a fiber optic transceiver. 1. When connecting devices with fiber optic transceivers, be sure to see the type of ports required. The ports are different and the required transceivers are different. Pay attention to the matching between devices. 2. When the optical transceiver and switch, hub, you must pay attention to confirm that the length of the twisted pair cable can not exceed 100 meters, it is worth noting that one end of the twisted pair cable should be connected to the RJ-45 port of the fiber transceiver, the other end must Connect to the RJ-45 port of the 100BASE-TX device. 3. When the optical transceiver is connected to the network card, be sure that the length of the twisted pair cable cannot exceed 100 meters, and the twisted pair cable should be connected to the RJ-45 interface of the fiber transceiver and the network card respectively. 4. Confirm that the length of the fiber is within the range that the single-mode or multi-mode transceiver can provide. Many people think that the fiber transceiver is normally used in the maximum range. This is wrong because only when connected When the equipment is a dual-duplex device, it can work in the largest range. If one or both ends are half-duplex devices, the transmission distance of the fiber will have obvious limitations.