If you are using Windows7 or WINDOWS8, you will find that the USB device's LED is still on when the USB device is securely removed. This can be confusing to us: is there any safe removal of USB devices? This is mainly due to the fact that the default setting for USB devices is to remain connected and to power the USB device in Windows7. To resolve this problem, refer to the following steps.
To turn off the USB power method after safely removing a USB device:
Use the Win+r shortcut to open the Run window and enter regedit to open the registry.
Locate the registry to Hkey_local_machinesystemcurrentcontrolsetservicesusbhub
Then click Edit--New--Item,
Name the new item HUBG and create a DWORD (32-bit) value for the item named Disableonsoftremove,
Right-click the value, select Modify,
Modify the numeric data to 1, and then determine that the
Now that you have safely removed the USB device, the LEDs on the USB device will be turned off.