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UNIVERSAL SERIAL BUS(USB) - is the most common type of computer port used in today's computers. It can be used to connect keyboards, mice, game controllers, printers, scanners, digital cameras, and removable media drives, just to name a few. With the help of a few USB hubs, you can connect up to 127 peripherals to a single USB port and use them all at once (though that would require quite a bit of dexterity).

USB is also faster than older ports, such as serial and parallel ports. The USB 1.1 specification supports data transfer rates of up to 12Mb/sec and USB 2.0 has a maximum transfer rate of 480 Mbps. Though USB was introduced in 1997, the technology didn't really take off until the introduction of the Apple iMac (in late 1998) which used USB ports exclusively. It is somewhat ironic, considering USB was created and designed by Intel, Compaq, Digital, and IBM. Over the past few years, USB has become a widely-used cross-platform interface for both Macs and PCs.

Posted on Aug 16, 2008

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Why can't I get my HP s3100n to run USB 2.0?


I was window shopping at Rite Aide and I saw these adapters that you plug into your USB ports and their out puts were 2.0 and others I think it was 12.00 USD

Feb 06, 2014 | HP Hewlett Packard Pavilion Slimline...

1 Answer

Pen drive access denied


USB ports and devices make connecting to another computing device convenient.
USB technology has been around since 1996, and is a feature found on most modern computing devices.
If your device is denied access to one of its USB features, do some troubleshooting to isolate and resolve the problem.
Viruses
Some computers come with a security feature that automatically denies access to a USB device, such as a flash drive, if harmful content is detected.
Installing an anti-virus software application and regularly scanning the computer and any connected USB devices can help you avoid experiencing denied access to a USB device.
Avoid opening USB flash drive files that you cannot identify or do not recognize, as these types of files are how viruses find their way onto unprotected computers.

Incompatibility

Inserting an incompatible device into your computer's USB port can also cause you to be denied access to your device's USB features.
For instance, if your computer supports USB 1.0 technology and you insert a USB 2.0 or USB 3.0 connector, the computer can experience interfacing problems that may cause a "USB access denied" prompt or situation.
If other USB devices begin to malfunction after inserting an incompatible USB cable into your computer, turning the computer off and back on again may resolve the situation.



Formatting
USB flash drives, also known as pen or thumb drives, are among the most common types of USB devices used in conjunction with computers.
Most USB flash drives are formatted using one of three types of formatting methods: FAT16, FAT32 or NTFS.
If you've formatted a USB flash drive using one method, used it on the computer and then reformatted the drive using another method, you can be denied access to the flash drive through the computer's USB port.
Wiping the flash drive clean and reformatting it again can resolve this type of problem.

Considerations

Many computer accessories, including printers and pointing devices, connect through the machine's USB ports and can interface interchangeably with multiple computing devices.
This feature increases the risks of picking up viruses and experiencing unauthorized reformatting. Limiting the amount of computers your USB devices accesses can help you avoid these situations.
Damaged USB cables can also make it impossible to access USB devices when they are connected to your computer.
USB cable damage usually occurs at the points where the cable and its connectors meet. Replace any damaged USB cables.
You have to be the computers administrator to change any values on any hard drive on your computer.
Click start control panel user accounts on the users tab click the name of the computer Administrator you must have full control.
Click start click to open on my computer you should see your usb drive could be E: or something right click select properties there will be an array of options
select the sharing tab option then advanced sharing make sure you have a tick in the share this folder box then click permissions make sure you have all 3 boxes ticked full control changes and read in windows 7
If you are running a Windows XP OS then you might be able to:
Click start right click on my computer select open
Right click the icon of your Flash Drive (It should be F:/ or something)
Click Properties in the menu that comes up
Click the Sharing tab
Click permissions
And finally, click Allow next to Full Control.


http://www.webopedia.com/TERM/U/USB.html

Sep 06, 2013 | PC Desktops

1 Answer

I can only get USB 1 on my windows xp pro


Your USB controller on the main board is only USB1. If you want USB 2 or 3 you have to mount an USB cad in your coputer

Aug 05, 2012 | PC Desktops

1 Answer

Which chip controlls usb ports?


Dear,

USB controller

Although many computers have an integrated USB controller on the motherboard, many computers may also have an expansion USB controller card. If your USB connectors are not connected directly to the motherboard it is likely your computer is using an expansion card.

Motherboard USB controller

If your USB controller is integrated on the motherboard it is generally best to consult the motherboard documentation or visit the motherboard manufacturer's web page for online documentation regarding your USB controller.

Expansion card USB controller

If your USB controller is an expansion card it would be best to refer to the manufacturer's documentation or visit the manufacturer's web page for additional information about your USB controller.

Note: If your USB controller is currently installed and working and you are running Microsoft Windows 98, Windows ME, Windows 2000, or Windows XP, you can determine the USB controller currently installed by opening the Universal Serial Bus controllers category in Device Manager. For example, "SiS 7001 PCI to USB Open Host Controller" indicates a computer is using the SiS chipset.

For more detail specifically to your product, check it!
http://h18000.www1.hp.com/products/quickspecs/11876_div/11876_div.html

best of luck!

Mar 10, 2012 | HP Compaq dc5000 Small Form Factor PC...

2 Answers

I dont have 2.0 usb how can i update my present usb controller


Dear Friend,
You can identify whether your PC has Hi-Speed USB or not relatively
easy. Open Device Manager and expand the Universal Serial Bus section. There should be an "Enhanced" USB host controller present.
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There are currently 7 manufacturers of the Hi-Speed USB host silicon themselves:ALi (Acer Labs), Intel, NEC, Sis, VIA, NVIDIA (shows as "Standard" controller),Philips.
Note:Older computers may have only the slower USB 1.1 interface. Adding USB 2.0 isn't difficult, but it does require a hardware addition.

There is no need to Update your USB in Latest PC.
You have to do one thing is that ensure you are perfectly Installed your Drivers(Included in CD which you Owned when Purchasing PC).



I hope You made it clear ...Thanks for Contacting FixYa...

May 04, 2010 | IBM NetVista PC Desktop

1 Answer

Usb on packard bell function slow (type usb 1.0)


This is normal. USB 1.0 is a lot slower than USB 2.0...why are you using USB 1.0 on a system that has Vista x64? Is it because of the device? Change the device...

Jan 12, 2010 | Packard Bell iMedia 6826 (P481000502) PC...

3 Answers

Ibm not boot from usb


When the system starts up there is usually a key to hit for SETUP, usually ESC, F1, F4, or DEL

Find it, and hit it at the right time.

You will enter the CMOS or BIOS setup.

Once there, locate the BOOT SEQUENCE section and allow a USB boot or external component Boot to be placed int he sequence it it MIGHT work.

Not sure what you're trying to boot from USB for.

Oct 19, 2009 | IBM NetVista M42 PC Desktop

1 Answer

Anytime I plug something in to the USB port it give a error message that states, Power Surge on the USB port. What can I do to fix this?


The USB device could be drawing more current than the USB port can supply or the USB port may be faulty.
Get a powered USB hub and plug it into your computer's USB port and then plug the USB devices into the powered USB hub.

Aug 16, 2009 | Dell Dimension 3000 PC Desktop

1 Answer

My computer cannot detect usb my computer model is 6bxa-61 samsung


You were saying that your computer could not detect any USB devices? Or just one USB device? Alright, you need to isolate the problem, follow the steps below:

1. Use at least 3 USB devices and connect them one at a time to the USB ports of your computer. If the first USB device is not detected, mark the USB port on your computer with "X" mark.

2. Now, connect the same USB device to another USB port of the computer. If you get the same problem, use the second USB device and connect it to the computer. If all 3 USB devices are getting the same problem connecting in all the USB ports of the computer (either on the front or on the back of the computer), then you need to update or re-install the USB driver to your computer.

3. Contact the manufacturer if the computer or the board and see if they could provide a USB driver for *********** board. Tell them what operating system (OS) you are currently running.

Have a great day!

Jul 24, 2009 | PC Desktops

1 Answer

Location of USB Root Hub


Hi dottyo,

Generally the front USB ports on a computer are USB version 1.1, good for USB keyboard and mouse or printer.

But, almost always the USB ports on the back of the pc are USB version 2.0 which is what you are looking for. Try any ports on the back of the pc case.

Hope that helps!

Jan 03, 2009 | Dell OptiPlex 170L PC Desktop

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