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USB Hubs

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Universal Serial Bus (USB) was designed to standardize the connections of devices to computers, both for communication and to supply power. It has become widely used in most devices and has largely replaced interfaces such as parallel and serial ports. 

USB hubs are devices that expand a single Universal Serial Bus (USB) port into multiple ports so that more devices can connect to a host system. Self-powered hubs use power from an external power supply and can provide full power to every port, whereas bus-powered hubs draw power from the host computer. Many devices require more power than bus-powered hubs can provide. USB hubs used for industrial applications generally have dual power inputs to power heavy-load applications and provide hi-speed USB 2.0 data rates up to 480 Mbps. It is also important that each port has electrostatic discharge (ESD) protection and can operate in wide temperature ranges.

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Moxa UPort 207
Moxa UPort 207
$265.63
Moxa 7-port entry-level USB hub, adapter included. Entry-level USB 2.0 hubs that expand 1 USB port into 4 and 7 USB ports, respectively. The hubs are designed to provide true USB 2.0 Hi-Speed 480 Mbps data transmission through each port, even for heavy-load applications. USB-IF Certification, and ESD Level 4 Protection.
Moxa UPort 407-T
Moxa UPort 407-T
$480.31
Moxa 7-port industrial USB hub, -40 to 85 C operating temperature, W/O adapter. Industrial-grade USB 2.0 hubs that expand 1 USB port into 4 and 7 USB ports, respectively. The hubs are designed to provide true USB 2.0 Hi-Speed 480 Mbps data transmission through each port, even for heavy-load applications. USB-IF Certification, and ESD Level 4 Protection.
Moxa UPort 407
Moxa UPort 407
$369.06
Moxa 7-port industrial USB hub, adapter included, 0 to 60 C operating temperature. Industrial-grade USB 2.0 hubs that expand 1 USB port into 4 and 7 USB ports, respectively. The hubs are designed to provide true USB 2.0 Hi-Speed 480 Mbps data transmission through each port, even for heavy-load applications. USB-IF Certification, and ESD Level 4 Protection.
Moxa UPort 404-T
Moxa UPort 404-T
$388.13
Moxa 4-port industrial USB hub, -40 to 85 C operating temperature, W/O adapter. Industrial-grade USB 2.0 hubs that expand 1 USB port into 4 and 7 USB ports, respectively. The hubs are designed to provide true USB 2.0 Hi-Speed 480 Mbps data transmission through each port, even for heavy-load applications. USB-IF Certification, and ESD Level 4 Protection.
Moxa UPort 404
Moxa UPort 404
$310.00
Moxa 4-port industrial USB hub, adapter included, 0 to 60 C operating temperature. Industrial-grade USB 2.0 hubs that expand 1 USB port into 4 and 7 USB ports, respectively. The hubs are designed to provide true USB 2.0 Hi-Speed 480 Mbps data transmission through each port, even for heavy-load applications. USB-IF Certification, and ESD Level 4 Protection.
Moxa UPort 204
Moxa UPort 204
$215.94
Moxa 4-port entry-level USB hub, adapter included. Entry-level USB 2.0 hubs that expand 1 USB port into 4 and 7 USB ports, respectively. The hubs are designed to provide true USB 2.0 Hi-Speed 480 Mbps data transmission through each port, even for heavy-load applications. USB-IF Certification, and ESD Level 4 Protection.

 

Ethernet hubs, switches and routers connect computers to networks, devices and other computers. 

Ethernet hubs are the least intelligent of the three devices. They simply take any message that is received and transmits it to every other device connected to that hub. For example, if CPU 1 on a network wants to send a message to CPU 5, it will send that message through the hub.The hub will then take that message and send it out to every connected device on that hub regardless of the intended target. When CPU 5 receives that message and wants to respond, it will send its response through the hub which sends it to every connected device. Ethernet hubs do not manage any data that is sent and tend to bog down networks. They also do not offer much security for the network. For these reasons, Ethernet hubs are are being replaced with network switches.

Switches transmit data from one device to another on the same network. Unlike a hub, switches use a switch table to learn where data came from and where to send it. Switch tables store Mac addresses and device ports. By storing this data, a switch can operate more efficiently than a hub, greatly reducing the traffic within the network.

Routers transfer data between devices while learning the location of those devices within the network. They are also a junction between two or more networks. An example of this would be a home router where the home network is connected to the Internet. Another example would be when the router connects two or more networks with different business functions. In addition to connecting two or more networks, a router offers important security features that help protect the network.

FAQ

How do USB hubs work?

A USB hub expands one port into many, allowing more USB ports to connect to the host.

How many USB hubs can you daisy chain?

There is a limit of 5 daisy-chained hubs (not counting the root hub).

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