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The USB Selective Suspend setting is a power-saving feature in Windows operating systems. It allows the USB hub driver to suspend individual USB ports that are not in use, without affecting the operation of other ports on the hub. This helps conserve battery power, especially on laptops and portable devices.

When a USB device is idle, the system can put it into a low-power state, which reduces overall power consumption. However, the device can still respond to external wake signals if needed. This feature is particularly useful for devices like fingerprint readers or other biometric scanners that don't need to be active all the time.

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Here's how you can enable or disable the USB Selective Suspend setting on a Windows device:

1. Open Control Panel:
    - Press "Windows Key + X" and select "Control Panel" from the menu.

2. Go to Power Options:
    - In the Control Panel, select "Hardware and Sound," then click on "Power Options."

3. Change Plan Settings:
    - Next to your selected power plan, click on "Change plan settings."

4. Change Advanced Power Settings:
    - In the "Edit Plan Settings" window, click on "Change advanced power settings."

5. Find USB Settings:
    - In the "Power Options" window, scroll down and expand "USB settings."
    - Expand "USB selective suspend setting."

6. Adjust the Setting:
    - You will see two options: "On battery" and "Plugged in." You can set both to either "Enabled" or "Disabled," depending on your preference.

7. Apply and Save:
    - Click "Apply" and then "OK" to save your changes.

And that's it! Your USB Selective Suspend setting is now configured.