One of the difference between the single mode and the multimode of the optical fiber transceiver:
The color of the interface device in the light head is removed from the optical head of the optical transceiver and the white ceramic is painted on the inside of the TX and RX interface. The multimode interface is brown.
The difference between the single mode and the multimode of the optical fiber transceiver is two:
From the model to distinguish: generally see whether there are S and M in the model, S for single mode, M for multimode.
The difference between the single mode and the multimode of the optical fiber transceiver is three:
If you have already put it in use, you can look at the color of the fiber jumper, the orange red is multimode, the yellow is the single mode.
Tip: single mode transceivers can work in both single-mode and multimode fibers, and multimode fiber transceivers can not work in single mode fibers. On the other hand, there is a single multimode converter device. The interchangeability of single mode fiber and multimode fiber can be solved.