Without the appropriate knowledge and understanding
You do not have to understand everything, but if a situation presents itself, educating yourself in the terms and components of your computer could be very helpful if it proves to be something within your ability after all. Considering that many of us are constantly on the web, it might be handy to gain an understanding of the most basic optical transceivers and how they make it so you can connect and search the internet with ease.
Providing you a straight connection to the web, you are either connected through a wireless network, or to an Ethernet cable which is connected to your modem or router when you are online. The Cat-5 cable, or Ethernet cable, as it is also known by, plugs into your PC by way of your optical transceiver, which is more often than not housed on the side of your laptop, or the reverse end of your CPU.
With each module, you get the choice of variable signal strength and assorted enhancements and there are a lot of various modules that can be utilized as your optical transceiver. Unlike cisco sfp modules, GigaBit Interface Converters, or GBIC modules, are some of your more average transceivers, and are output/input modules with one end that plugs into a gigabit Ethernet port, while the opposing side is plugged into the fiber optic patch cord and links the fiber optic networks.
Allowing your device to process the data accordingly, the base function of the GBIC module is to communicate the signals between the Ethernet network and the fiber optic network. The classification of this module is based on optical wavelength, information transmit rate, optical power, and the working distance. One terrific aspect of the GBIC module is that it's a hot pluggable, allotting for a port to be changed from one kind of external interface to another by simply plugging the module in to an alternate external interface without having to power down the host switch or router in the process.
There are hundreds if not thousands of components that work in unison to keep your computer performing properly, and with a better understanding, you should feel more capable and more equipped to take care of more of your own technical problems on your own without turning to further help.