Your USB ports on your Dell computer are plug and play. If you have issues with your USB port, it is port related, driver related or device related. The following solutions will help you identify the problem to resolve your USB port issues.
To Identify a Working USB Port
Begin troubleshooting your USB ports by checking Device Manager to see if your USB ports or hubs are working properly.
To Update the USB Port Driver
An out-of-date BIOS driver can create issues with your system recognizing the USB port.
To Run a Diagnostic Test on your USB Port
Dell has an online diagnostic tool to help identify and fix issues with your system.
If ALL the usb ports have stopped working, this is a problem with the USB controller. The short answer is that you cannot easily repair this. In all probability, the controller, or a circuit trace to it has blown or shorted. You would need to get another motherboard.
If one is still working, then you can get a PCIMCIA card to usb port that will give you 2-4 extra ports, but this will only work if at east one of your existing usb ports is still functioning
SOURCE: ONE OF MY USB PORTS STOPPED WORKING
A shot in the dark here, but try this: Click Start>Run, type devmgmt.msc and press enter. Click the plus sign beside "Universal Serial Bus Controllers." Right click each listing that appears underneath "Universal Serial Bus Controllers" and click Uninstall. Click OK on the confirmation dialogs. After you get done uninstalling all of them, restart your computer and Windows should reinstall them. After it is done, try that USB port again.
SOURCE: DELL LATITUDE D600 USB PORT NOT WORKING
Hi,
You can solve this issue by installing usb 2.0 driver in your DELL LATITUDE D600 laptop find Blow Drivers Download Link:
.DELL LATITUDE D600 Drivers Download Link
SOURCE: dell latitude D600 cannot read from USB ports
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