USB Device Not Recognized Error?

Connections b> The USB cable must be securely connected both to the iPod and to the selected USB port on the computer. Reattach the cable at both ends, and click "Computer" in the start menu to see if the iPod is shown connected to the drive for that USB port. b> Drivers b> If the drivers of the computer responsible for the USB interface are out of date, malfunctioning or incorrectly installed, that may also cause the iPod to not be recognized by the computer. If this is the case, the device may not appear in iTunes and there may be an exclamation point next to the device in Device Manager. b> Software b> The latest version of iTunes is recommended to best communicate with the various models of iPod. Go to the iTunes website or click "Help" and "Check for Updates" in iTunes to install the most recent update. Further, the computer must be running Windows XP, Vista or Windows 7 for PCs, or OS X v.10.4.11 or later for Macs. b> Battery b> The iPod's battery must have sufficient charge to be recognized in iTunes; charge it either via USB connection or another power source if the indicator shows a low battery. Once the battery has charged, try to connect the iPod to the computer via USB cable again.
http://support.apple.com/kb/TS1538 Ipod not recognized http://support.apple.com/kb/TS1495 Device not recognized

hi Markaz.
you can try is to open Device Manager, expand USB Serial Bus Controllers, right-click on USB Root Hub and then click on Properties. Click on the Power Management tab and uncheck the Allow the computer to turn off this device to save power box.
or read up more at this link.
How to Fix USB Device Not Recognized in Windows

What do I do if my USB device is not recognized? Method 4: Reinstall USB controllers.

1. Select Start, then type device manager in the Search box, and then select Device Manager.
2. Expand Universal Serial Bus controllers. Press and hold (or right-click) a device and select Uninstall. ...
3. Once complete, restart your computer. Your USB controllers will automatically install.

Error: "USB Device not recognized" when you try to access a USB ...

https://support.microsoft.com/.../error-usb-device-not-recognized-when-you-try-to-acces... Search for: What do I do if my USB device is not recognized?

or this link.
Windows does not recognize the USB device Google Search

Here Two Reason for USB Port Not Recognized:

1. Check you USB cable properly connected to the you computer, If cable break or not connected properly, It will show your cable not recognized.

2. If again these problem shows. go to,
My Computer - right click - Properties - Hardware - Device Manager - and Unistall you USB drivers - then again scan new hardware.

you need to reinstall printer driver .
"USB NOT RECOGNIZED" error come when windows cant to find driver of a new device .

Turn off the CPU unplug the power cable and all usb cables, let it sit for about 15-20 minutes. Plug power cable back in, turn on CPU, plug in your usb devices.

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