Usb port refuses to recognize plug in hardwares,

try to plug your device to other usb port the reason sometimes a device wasn't recognize by the computer is because some usb ports are low in power so the device can't function properly that's why the pc can't detect it..Hope it will help

Generally USB ports are part of the motherboard so you will not be able to replace just the USB ports. you can try to uninstall the USB controllers in device manager then reboot your computer. they should automatically get reinstalled. also try booting to safemode and check if it will recognize your USB devices.

*if you get a pop up for found new hardware when you plug in any of your USB devices then it would usually indicate that the hardware is working fine and the problem is with your OS

You don't need to install any drivers for it, windows should detect new hardware and install the drivers that it already has for it. If your system isn't detecting new hardware when your plugging it in, then you might have an issue with your USB ports on your motherboard. If thats the case then go ahead and try hooking up like a USB keyboard or USB mouse. If it recognizes those then you know your ports are fine.

If your ports are fine and your USB firefly drive isn't being recognized, then your USB firefly drive is bad.

First thing you need to do is to know that the USB ports of your laptop is really working. Insert another usb devices or storage such a flash disk. If the flash disk being inserted is not recognized by the system then the usb port you had inserted is malfunctioning or it is defective. But if the other usb devices like the flash disk is working then your new bought mouse is defective. Try to plug the usb mouse to the other ports available in your laptop.

Try one of two things, plug in the nano into a different usb port, or press the menu + center button for 5 seconds.

Normal 0 Try disconnecting the Camera from the USB port and reinstall the CD or Downloaded software program. When the program asks you to connect the camera to the USB port, do so and it should work.
Hope this helps. Bud

Go to Start --> Control Panel --> Printers and Other Hardware --> System --> hardware --> device manager --> right click on the usb port that is malfunctioning (should have a red or yellow exclamation by it), right-click it and click on Update Driver

If that fails, try another USB port on the computer to see if you have more success

There is no enough power in you USB port. I was have similar problem with my old PC (Duron 1.3GHz, I don't know what motherboard).

When I conected HDD (My passport Essential) to USB (there is only USB 1.1 port on this MB, and probably if you have USB 2.0 you will have no problem), hardware wizard is started, looking for drivers (which are not needed to install portable HDD), and then I have message like "unrecognized USB device ...".

SOLUTION: On this MB there is 6 USB 1.1 ports, but only 2 are connected on case (with plugs on case outside), others are on MB and if you have cable you can use it. In my BIOS all 6 were turned on, and I think there must be a problem with power on chip (you have some power divided with 6 ports, and this is not enough for HDD).

I turned off my other USB ports in BIOS, and left only fist two, and HDD is now in my computer ....

You'll want to verify your computer recognizes your usb ports.
In device manager, look to see that you don't have anything with an exclamation mark, question mark, or red X on it. Make sure you have the usb ports listed under Universal Serial Bus controllers. If nothing shows, your usb ports may be dead. Depends on the age of your computer and what might have happened to them.

Device manager- right-click My Computer and go to properties, then select the hardware tab.

Could be faulty usb port or cable try other computers/ports/cable