Archive | January, 2012

What is the difference between USB and Ethernet?

USB also called Universal Serial Bus presently comes in 2 versions.
USB 2.0 and USB 3.0

USB 2.0 transmits data at 60 megabytes per second.
USB 3.0 transmits data at 400 megabytes per second.

Physical distance is stated at 10ft maximum according to various text books however in the real world I have successfully used USB cables exceeding 25 ft without any problems.

USB can also be used to transmit power which is how a USB hub, USB mouse or other USB device lights up when it is plugged into a powered USB port. USB can transfer and transmit Data and Power.

USB works well with printers, keyboards, digital cameras, camcorders, external ROM – drives such as CD and DVD burners, external hard drives and other devices that support USB that are physically close to the USB port / HUB or computer.

Ethernet on the other hand does not transmit power and only transmits data.
Ethernet presently comes in 2 versions.
Category 5 and Category 6.

Category 5 transmits data at 100 megabytes per second.
Category 6 transmits data at 1000 megabytes per second.

Physical distance is usually around 100 yards / 300 ft however I have seen Ethernet cable runs that exceed this distance and perform well. Generally if your Ethernet run is more than 300 ft you may or may not need a (Ethernet repeater – switch) which will vary from physical situation to situation.

Ethernet is used for networking computers, routers, switches, networked printers and other networked devices.


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