Fixed ports, as the name implies, are fixed. If they are 8 ports, they can only have 8 ports and can't be added. 16 ports can only have 16 ports, and can't be expanded. At present, such fixed-port switches are common, and the number of ports is not clearly defined. The general port standards are 8 ports, 16 ports and 24 ports. The number of non-standard ports mainly includes 4 ports, 5 ports, 10 ports, 12 ports, 20 ports, 22 ports and 32 ports.
The fixed port switch has the advantages of simple installation and low price, and is suitable for small LAN node connection equipment or large network access equipment. The fixed-port switch is usually used as an access layer switch to provide network access for end users, or as a convergence layer switch to realize the connection with the access layer switch.
Although the fixed-port switch is relatively cheap, it can only provide limited ports and fixed interfaces. Therefore, it has certain limitations in terms of the number of users that can be connected and the transmission media that can be used. However, this switch is widely used in working groups.