Who can talk about the difference between dual-port optical fiber network cards?

The main differences between optical network cards and ordinary network cards are:

1, different interfaces. The interface of optical fiber network card is optical interface, and the common interface of network card is RJ45 electrical interface.

2. The interface speed is different. The fiber interface can be 100Mbps, 1Gbps, 10Gbps or even higher. The interface of an ordinary network card is generally 10M/ 100M, and at present it can reach 1000M at the highest (network cables with more than 6 types of cables are required).

3. The transmission distance is different. Generally, the longest recommended transmission distance of network cable is about 100 meters. And optical fiber can transmit hundreds, thousands or even tens of kilometers.

Related knowledge points:

The network card is a network component working in the link layer, and it is the interface connecting computers and transmission media in the local area network. It can not only realize the physical connection and electrical signal matching with transmission media in LAN, but also involve the functions of sending and receiving frames, encapsulating and unpacking frames, media access control, data encoding and decoding, data caching and so on.

Optical fiber network card refers to optical fiber Ethernet adapter, referred to as optical fiber Ethernet adapter for short. The signal transmission is carried out according to the Ethernet communication protocol, and is generally connected with the optical fiber Ethernet switch through an optical cable.

Optical fiber Ethernet card is mainly used in optical fiber Ethernet communication technology. Optical fiber network card can provide reliable optical fiber connection for users' computers on fast Ethernet, which is especially suitable for places where the access information point is more than the access distance of Category 5 cables (100m). It can completely replace the network structure of RJ45 interface Ethernet external photoelectric converter and provide users with reliable optical fiber-to-the-home and optical fiber-to-desktop solutions. Users can select optical fiber interface parameters (including connector, single/multimode fiber, working distance, etc.). ) according to the usage.