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Article Number: 000137751

O2Micro SD Memory Card Reader may cause sleep or power management issues on Latitude and Precision mobile systems

Summary: Install the latest driver for the O2Micro SD Memory Card reader to resolve sleep and power management issues on Precision and Latitude systems with this card reader installed.

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Article Content

Symptoms

Latitude and Precision mobile systems with the O2Micro SD Memory Card reader installed may experience sleep or power management issues. Follow the steps below to resolve this issue.

Latitude and Precision mobile systems experiencing various sleep or power management issues with the O2Micro SD Memory Card reader installed

Latitude or Precision mobile systems with the O2Micro SD Memory Card Reader installed may experience issues with power management performance. Users have reported the following problems on Latitude or Precision laptops with the O2Micro SD Memory Card Reader installed:

  • The system not waking from sleep mode
  • The system entering sleep mode even though this mode is de-activated
  • The system locking up once in sleep mode
  • The system losing keyboard or mouse functionality after waking from sleep mode

Install the specific O2Micro SD Memory Card Reader driver to resolve the issue for Latitude and Precision mobile systems experiencing these power management or sleep mode issues, verify the O2Micro SD Memory Card Reader is installed.

WARNING: Downloading and installing device drivers or software from unknown sources may cause the device not to work correctly, cause your PC to crash or not boot into the operating system or sometimes even infect your PC with virus, trojan or other malicious software.
  1. Browse to Dell Drivers & Downloads website.
  2. Identify your Dell product
    • Enter a Dell Service Tag or Model in the window box or use Detect PC to auto-detect your Dell product.
      Follow the on-screen instructions to install the Dell SupportAssist app. Refer to the Dell knowledge-base article Dell SupportAssist app (formerly Dell System Detect): Common Questions for more information.
    • Enter the Service Tag, Express Service Code or Serial number for your Dell product and click Submit.
    • Select your Dell product manually by clicking on Browse all products.
  3. Click Detect Drivers to allow Dell to automatically scan your PC and list all available device drivers.
  4. Alternatively, you can locate device drivers manually using:
    • Keyword search box - Enter a keyword of the device driver you are looking for, example - BIOS, Chipset, Audio, Video, etc.
    • Operating System & Category filters - Select the operating system installed on your Dell PC and choose a device driver category.
    • Using the drop down menu, select Chipset.
    • Select the O2Micro SD Memory Card Reader driver file.
    SLN292715_en_US__1icon Note: To view device drivers for your specific Dell PC, select the check-box "Show drivers for Service Tag".
  5. Click the Download next to the device driver of your choice and save the file.
    You may have to click View More to see more drivers.
  6. Using File Explorer (also known as Windows Explorer), browse to the location where the downloaded file was saved.
  7. Double-click on the .exe device driver installation file and follow the on-screen instructions to complete the installation process.
    Some device drivers may require you to reboot the PC to complete the installation process.

Cause

NA

Resolution

Refer to Symptoms section.

Article Properties

Affected Product

Latitude 6430u, Latitude E5440, Latitude E5540, Latitude E6440, Latitude E6540, Latitude E7240 Ultrabook, Latitude E7440, Precision M4800, Precision M6800

Last Published Date

16 Feb 2024

Version

4

Article Type

Solution

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