USB Hubs and Ports Explained
The USB standard has become the universal means of connection peripheral devices and equipment to the computer. Computers have either two or four USB port connectors. Each of these can support a large number of connections but to be able to attach more than two or four devices requires a multi-connection hub. There are many different types of hubs and this article seeks to explain some of the important considerations in selecting the best choice of hub for your system.
The USB bus system in computers was introduced in 1996 and has gone through a number of developments and enhancements. It started out as USB 1 which was very slow and had many bugs. Version 1.1 brought a higher bandwidth of 12 MBits/second. The latest version of 2.0 gives a bandwidth of 480MBits/second and is fully backward compatible with USB 1 and 1.1. Link to a table showing differences between USB speeds (http://www.usb-products.com/usb-speed.aspx)
Port Connections and Power
Multiple Chip Hubs
What this means in reality is that a multiple TT hub will provide much higher bandwidth per port when several devices are connected from one hub.
Maximum Performance and choice of Where to connect a device If you are after maximum performance for each of your USB 2 devices, each device should be plugged into its own USB port in the computer. Additional plug in cards can provide a vast number of USB ports for most needs. However, this situation might be going too far except for the most demanding of situations. Although several USB devices might be connected at the same time it is unlikely that they will all be in use together.
A useful compromise is to plug small bandwidth devices together into a single hub. These would include: mice; keyboard; Speakers; little used devices.
For devices that require a high bandwidth and are used often, direct connection in to a USB port is the best option. Devices would include: Flash memory drives; external disks; Web cams; Other frequently used devices.
If you don't have sufficient ports then either more ports should be added with a plug-in card or a good quality hub with multiple transaction translators should be used. The devices placed on the hub are those that are used less often. Those devices placed directly on the port are used most often.
Link to a selection flow chart that helps in selecting a hub (http://www.usb-products.com/USB-Hub-Selection.aspx)
USB hubs tend to clutter up the area with cable connections and power lead. These naturally go out of sight if possible or behind the monitor. For mobile computers, a small compact hub can be obtained. These may have there own wind-in or tidy away cables.
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Nigel Stephens heads an online business at http://www.usb-products.com supplying computer hardware products. Nigel's emphasis is in providing useful information so that consumers can make more informed choices.
Expansion Cards Part 1: (of a 3 part series)
PCIThe expansion slots available on motherboards allow for a variety of upgrades in a computer system, but matching the appropriate card to an available slot needs to be addressed before making any purchasing decisions. The most common types of expansion cards for modern computer systems can be broken down into three formats: PCI, AGP, and PCI Express.
How to Get the Case Off Your PC!
This is the first step to servicing, upgrading or removing PC hardware from your PC. Refer to my other articles on adding, upgading or removing just about any piece of hardware.
How to Choose a New Hard Drive for Your Computer
If you are running out of space on your computer or find that programs load a little slow, or that big files take a long time to open, it may be time for a new hard drive.Making a more careful decision about the hard drive can mean a much longer working life for the hard drive.
How to Save Money With Cheap Computers
We all know that computers change more then any other type of technology. There constant changing can also leave are wallets completely empty.
Lock Workstation Fast
When you work in an office, it's important to lock your workstation every time you step away from your computer. A pain, but a security measure.
What Is A Fuse? And How To Test It.
A fuse is a very thin wire, which either melts or vaporizes when too much current flows through it. The thin wire may be made of aluminum, tin-coated copper or nickel.
How to Avoid Getting Ripped-Off When You Purchase A New Printer
It's no big secret that printer companies like HP and Brother are marketing their printers with the cost of refilling the cartridges in mind. Just the other week my family and I were at our hometown Wal-Mart and we were amazed at the price of a new printer.
Tips To Select Proper Motherboard
Selecting motherboard is really simple. As name suggests "Motherboard" acts as a protective mother of CPU, RAM and other add on cards since these components stand firmly on motherboard.
A Review of Refurbished Toshiba Laptops
Toshiba offers a few of their refurbished laptops in the "Clearance Store" of their official website toshibadirect.com.
DVD is an optical disc storage media format that can be used for storing data, including movies with high video and sound quality. DVDs resemble compact discs: their physical dimensions are the same-12cm or the mini 8cm-but they are encoded in a different format and at a much higher density.
Recordable DVD Formats Explained
Picking your way through the ton of information available on recordable DVD formats can be a nightmare. To help you out, we've done our best to distill it into this summary.
SED is Coming
One of the bigger challenges facing display manufacturers is to develop a picture with the same warm characteristics as Cathode Ray Tube, but with far less weight and size.The disadvantage of CRT, however is the size, weight and power consumption.
Buying / Selecting Computer Components
This is the step takes the most time and consideration. Which parts do I buy? Which are best?There are many good places to buy computer parts.
Understanding Transistor Data and Replacement
If, for some reason, you can't get an exact replacement for the transistor that you want to replace, you can refer to one of the transistor substitution guides or book, and try to identify a "near replacement". Beware, however.
The Printer Cartridge Game
Think you got a great deal on a printer? Like the rest of us, you probably paid $50 to $75 for a decent Epson or Lexmark printer. What's the catch, you might have asked? Most salesmen would say there is no catch.
What Tablet PCs Can Do for You
Tablet PCs are great. If you are a mobile person, and you have never considered getting a tablet PC in the past, now is as good a time as any to start checking them out - the technology is cutting-edge, the usability is superb, and prices are starting to drop.
Does Size Really Matter In Our Digital Age?
Well, we've all seen the advert, but that's not what I want to talk about, so get that out of your head straight away. No, let's think about what many call the "Queen of Arts" - namely painting.
Computer Parts Online
In today's age, building computers on yourself is often chosen as the safest and choicest option by a sizeable part of the market for computers. There are various advantages and disadvantages for doing so.
A Review of Refurbished HP Laptops
HP refurbished laptops can be found on their website hpshopping.com.
Rackmount Computer Keyboards
The other piece of vital equipment to accompany the rack mount computers and the monitors are the rack mount computer keyboards. Rackmount computer keyboards are built with durability and reliability in mind.
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