Symptoms

The following article provides information on how to resolve a mouse and keyboard lag issue seen on the Precision M7510 and Latitude E7470 notebook systems. Table of Contents: Are you experiencing lag/connection issues with your USB peripherals on your M7510 or E7470 system?Resolution Steps Are you experiencing lag/connection issues with your USB peripherals on your M7510 or E7470 system? For those who are seeing lagging/connection issues on their USB peripherals on their Precision M7510 or Latitude E7470 systems, check your issues against the following symptoms and if they match go to the solution steps in the section below. Symptoms: Delayed external keyboard and mouse inputs when typing or moving the cursorSometimes the input key strokes do not register and typing on the keyboard produces no action on the system, after about 15-30 seconds the system then registers the key strokesIssue is also seen on the TB16 and ePort docks with USB peripheralsYou may also see a lagging or bad connection issue with a USB headsetA workaround of disabling C-States in the BIOS will resolve the issue Back to Top

Resolution

Resolution Steps Dell's Engineering department have rolled out a fix as part of a recent BIOS update. Follow the steps below to download the most recent revision of the BIOS for your system to resolve this issue. Here are the steps to install from Dell: Precision 7510 Mobile WorkstationLatitude E7470 Notebook Precision 7510 Mobile Workstation Go to the Dell Support Site Enter your service tag or express service code to get drivers specific to how your system shipped Alternatively you can choose your system from the product list to get a general list of drivers for that system Click on the Drivers and Downloads drawer in the menu Ensure you have the correct operating system set Select BIOS from the category dropdown Locate the BIOS update and verify it's revision 1.14.4 or newer Click on the download link Once you double click on the install file - follow the onscreen instructions to update to this revision Latitude E7470 Notebook Go to the Dell Support Site Enter your service tag or express service code to get drivers specific to how your system shipped Alternatively you can choose your system from the product list to get a general list of drivers for that system Click on the Drivers and Downloads drawer in the menu Ensure you have the correct operating system set Select BIOS from the category dropdown Locate the BIOS update and verify it's revision 1.17.5 or newer Click on the download link Once you double click on the install file - follow the onscreen instructions to update to this revision Note: Your system will restart while it flashes your BIOS to the most recent revision. Best Practice is to have the system connected to a constant source of power throughout this update. If you are still experiencing issues once the BIOS has been successfully updated, then contact technical support for further help with this issue: Contact Us Back to Top

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