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How USB Ports Stay Powered Even When Your Device is Shut Down

2024/05/27
PC Repair

Key Notes

  • Disabling hibernation can prevent USB ports from staying active.
  • Accessing BIOS settings is crucial for managing USB power options.
  • Updating chipset drivers can resolve power supply issues.

Understanding Why Your USB Ports Remain Active After Shutdown

Many laptop users face the issue of USB ports maintaining power even after a complete shutdown, resulting in unwanted battery drainage. Understanding the cause of this problem is essential to finding the right solution.

Resolving USB Power Issues After Shutdown

To address the issue of USB ports supplying power when they shouldn’t, follow these steps:

Step 1: Disable Hibernation

Hibernation retains your system state during shutdown. Disabling it may help ensure your USB ports are not powered after your laptop shuts down. Execute the following command in the Command Prompt as an administrator: 

powercfg /hibernate off

Pro Tip: If you frequently use hibernation, consider the benefits versus the drawbacks of disabling it.

Step 2: Turn Off Fast Startup

Fast Startup can create issues with USB power management. To disable it:

  1. Open Control Panel.
  2. Go to Power Options.
  3. Select Choose what the power buttons do.
  4. Uncheck Turn on fast startup (recommended).
  5. Save changes.

Step 3: Activate Selective Suspend

Enable the selective suspend feature to allow Windows to manage the power to your USB ports effectively:

  1. Visit Power Options.
  2. Click on Change plan settings of your selected plan.
  3. Access Change advanced power settings.
  4. Expand the USB settings and enable USB selective suspend setting.

Step 4: Adjust Your BIOS Settings

Different motherboards offer options to control USB power after shutdown. Consult your motherboard manual or support page.

For MSI Motherboards:

  1. Enter BIOS by pressing Del or F2 during boot.
  2. Select Advanced Mode.
  3. Navigate to Settings > Advanced > Wake Up Event Setup.
  4. Disable the Resume By USB Device option.

Step 5: Enable ErP Mode in BIOS

ErP Mode reduces energy consumption. To enable it:

For ASUS Motherboards:

  1. Enter your BIOS settings.
  2. Press F7 to switch to Advanced Mode, if needed.
  3. Navigate to the APM Configuration tab.
  4. Select Enable(S5) for ErP Ready.
  5. Save changes and exit BIOS.

Step 6: Update Your Chipset Driver

Outdated chipset drivers may cause USB power issues. To update:

  1. Go to your computer manufacturer’s website.
  2. Navigate to the support section and find the latest chipset driver.
  3. Download and install the driver.

Additional Tips

  • Regularly verify that your BIOS settings are correctly configured.
  • Consider unplugging devices when shutting down to conserve battery.
  • Utilize power management settings in your operating system for better control.

Summary

In this guide, we explored various methods to address the issue of USB ports remaining powered after a computer shutdown. By implementing the steps outlined, you can effectively manage USB power and prevent unnecessary battery drain.

Conclusion

Addressing USB power management is essential for maintaining battery life and device functionality. By following this guide, you can confidently tackle the problem of USB ports that continue to draw power after shutdown.

FAQ (Frequently Asked Questions)

How do I cut off the power of the USB port after I shut down my ASUS system?

Enabling ErP Mode in your BIOS settings typically resolves this issue by cutting off power to USB ports when the system shuts down.

How can I tell if a USB port is powered?

Connect a USB device, such as a mouse or keyboard. If it operates correctly, the USB port is still powered.

PC Repair