Workstation PC Technician

A hub and a switch both add more LAN ports to an existing network. They help increase the number of Ethernet-ready clients that a network can host. The main difference between hubs and switches is a hub uses one shared channel for all of its ports, while a switch has a dedicated channel for each one. This means the more clients you connect to a hub, the slower the data rate gets for each client, whereas with a switch the speed doesn't change according to the number of connected clients. For this reason, hubs are much cheaper than switches with the same number of ports.

However, hubs are largely obsolete now, since the cost of switches has come down significantly. The price of a switch generally varies based on its standard (regular Ethernet or Gigabit Ethernet, with the latter being more expensive), and the number of ports (the more ports, the higher the price).

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You can find a switch with just four or up to 48 ports (or even more). Note that the total of extra wired clients you can add to a network is equal to the switch's total number of ports minus one. For example, a four-port switch will add another three clients to the network. This is because you need to use one of the ports to connect the switch itself to the network, which, by the way, also uses another port of the existing network. With this in mind, make sure you buy a switch with significantly more ports than the number of clients you intend to add to the network.
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