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Since the mid-90s we saw the birth and growth of a connective technology called Universal Serial Bus (USB). Originally developed to connect computer and telecommunication equipment together, has gradually become the main means of connecting a number of other devices and has contributed significantly to the IT world today.
The huge number of USB products on the market today is simply staggering, from mice and keyboards, modems, external hard drives USB fans, lightscup of hot coffee! Most external computer connected devices today connect to a computer via a USB port. So no wonder so long ago, most computer users are wondering what to do if the USB ports (sockets) on your computer all be used.
There are two solutions to this problem, always connect and disconnect when you switch from USB devices or investing in a simple, inexpensive device called a USB hub. A USB hub is a small unit with two or more USB ports,plugs into a computer's USB port, allowing the freedom to connect multiple USB devices without solving the other. There are generally four types:
1st internal USB PCI
An internal USB PCI card must be installed to open the PC caseand inserting a card into an available PCI slot on the motherboard, this kind of USB extension is not advisable if you work with computers and on the inside. If the old USB 1.1 and USB 2.0 update, the version of Windows must be updated so that your PC that supports USB 2.0 functionality.
2nd USB hub (without power)
An external USB-powered hub is not a simple and economical device that a computer directly to a USB port available and that is all there is to it. These are usually very compact, and provide the ideal solution for mobile users with laptops and desktop users.
Be aware that some USB devices require a small amount of power through the USB port, usually mechanical devices such as printers, scanners, digital cameras, etc.. This type of USB hub may not be able to provide enough power for these devices, especially if you deliver a couple of USB devices together.
3rd Powered USB Hub
A> External USB Hub is compact and can be one of the computers directly to USB ports, so there is no need to open your computer to install. The only difference is that the powered hub with its own power supply, which must be inserted in the socket, the power to all USB ports on the hub it will work any type of USB devices properly.
Most hubs have a reasonable length of USB cable allows you to lift themselvesbe positioned in a location easily accessible, for example, the top computer or desk, makes plugging and unplugging USB devices much easier. This makes it the hub of the best all-round solution for users of desktop computers.
4th PC Card USB
If you have a laptop and use the road, she announced a further option for the USB Hub, USB PC-Card PCMCIA Card USB. This device slots into the PCMCIA slot / port on a laptop computer found and now offers twoadditional USB ports without using a USB port available on the laptop.
This is the most popular solution for mobile laptop users. When buying an external USB hub suitable, consider the location of the USB ports on your computer. If you are on the back of the computer or in an awkward position, you can make life much easier using a USB hub that comes with a USB extension cable, or by purchasing a USB extension cable. In this way the USB hubpositioned in a more accessible location to connect and disconnect USB devices.
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