Question about Acer Extensa 501T Notebook

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USB Port The USB port on my laptop does not appear to work at all. The laptop does not recognize when any device (flash drive, printer, mouse, etc) is plugged in.

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Re: USB Port

Go to my computer>properties>hardware tab>device manager and go down the list to universal serial bus controllers, click on the '+' sign and see if any on the list have a red cross or yellow exclamation mark next to them, if there is '!' then right click and click update driver, if a 'X' then right click and select enable. If still not working, right click anduninstall all the controllers and then restart notebook and the controllers will be re installed and hopefully should solve the problem, if not then there may be a usb port fault on the motherboard

Posted on Apr 08, 2007

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Good Morning! Please help me how to restore the function of my laptop USB port, when i connect even flash drive, printer, scanner to my usb port it dosn't work properly, its hang then when i remove and...

Have you tried to shut down your computer and re-start it up again ? (to see if your USB port starts to works again ?)
One thing you should (must) do before you remove / detach a USB device (e.g. flash drive, camera, etc.) from the USB port is to make sure you properly "dismount" (eject/disconnect) the device first (e.g. use its Property menu option) before you physically remove the device (i.e. take it out - remove it from the USB port). If this is not done, you'll get the problems you're experiencing.

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1 usb port cant detect a flash drive but can detect other usb devices

I'd say its the flash drive thats faulty .Try it in another computer to see if its recognized.If not the flash drive itself is bad.That port recognizing other devices says it functioning as intended.

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HP Pavilion zv6000: USB ports are inop. USB port on rear of computer works fine. USB port on left/front will power my flash drive, but the light stays on constantly. The flash drive is does NOT show up in...

After reading the description, I think you need to try updating BIOS and latest device drivers for USB. Because USB are getting power on that means there would not be any fault to from the motherboard.

So please try updating latest BIOS for your notebook.
If you can provide me the product no for your notebook and the operating system which you are using currently then I can find the one for you.

Otherwise you can also do the same.

Type in the product no. on Then go to software and driver download page, select the proper OS and search in BIOS ROM pack available for your notebook.

I hope this will help.

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1 Answer

My Dell Latitude D400 laptop's USB ports stopped working. They used to work fine, now they don't recognize anything (card readers, mouse, camera, etc.) I removed the USB port drivers and reinstalled. It...

USB port is corrupt...if all that you said is what is happening then the best is to
buy a keyboard to USB port convertor....
refer this image....Ebay has it for about 1$


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4 Answers

The USB ports on my Toshiba A135 S2356 laptop are not working. I tried to use my printer and it says not connected. I bought a new cord but it still doesn't work. What should I do?

1. first check ur USB port using any other USB device, like pen drive, mouse, keyboard,etc.
if system detects that device, then ur USB port is OK!

2. if USB is OK, then the problem is with the 'Printer Driver' not the cord!

3. reinstall the printer driver!

4. update the driver!

5. if USB port is not working, then replace it!

if this helps, tell me.......

Dec 30, 2009 | PC Laptops

2 Answers

Acer USB Ports - Unknown Device - Will Run Mouse but not Printer

Sumtimez ports r damaged.somtimes not.. just chek other devices..if done..thn chek RAM!! lil chance tht u hv lost ur laptop!

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Usb device not recognize

You mentioned that you uninstalled the unknown device from the Device manager. If you uninstall it then connected your usb flash drive you will see an error again on your device manager. This means that the driver for your usb port is not properly installed.

To install it, visit dell website, look for the model of your machine and locate the driver, download it then install from your machine.

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2 Answers

USB device not recognized

This solution worked for me when I got the USB device not recognized message:
It can be quite frustrating. I've heard that older computers are more likely to have the USB device not recognized message.

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1 Answer

Wireless mouse and usb game controller

It is faulty. Something internal is broken. I feel the only way to remedy this is replacement, sorry. I have seen this many times.

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