You do not have to understand everything, but educating yourself in the terms and components of your computer can be very helpful if a situation presents itself that might prove to be something within your understanding after all. Considering that most of us are constantly on the web, it may be useful to gain an understanding of the most basic optical transceivers and how they let you connect and surf the internet with ease.
You are either connected through a wireless network, or to an Ethernet cable which is connected to your modem or router when you're on the internet, giving you a straight link to the internet. The Ethernet cable, or Cat-5 cable as it's more commonly known, plugs into your PC via your optical transceiver, which is usually found on the side of your laptop, or the reverse end of your CPU.
There are many different modules that may be utilized as your optical transceiver, and with each module, you get the choice of variable signal stability and various enhancements. Unlike cisco sfp modules, GigaBit Interface Converters, or GBIC modules, are some of your most well known transceivers, and are output/input modules with one side that plugs into a gigabit Ethernet port, while the other end is connected to the fiber optic patch cord and links the fiber optic networks.
Allowing your PC to process the data accordingly, the basic use of the GBIC module is to communicate the signals between the Ethernet network and the fiber optic network. This module's classification is based on optical wavelength, data transmit rate, optical power, and the working range. Allotting for a port to be altered from one kind of external interface to another by simply plugging the module into an alternate external interface without needing to power down the host switch or router in the interim is one exceptional quality of the GBIC module is that it is a hot pluggable.
With a better understanding, you will feel more confident and better equipped to take care of more of your own technical issues on your own without turning to outside assistance regarding the a lot of components that work in unison to keep your device operating properly.