FRITZ!Box 4020 Service - Knowledge Base
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Motor of a USB hard drive does not turn off when testing the energy-saving mode
When you test the energy-saving mode for USB hard drives in the FRITZ!Box user interface, the motor of the USB hard drive does not turn off.
USB hard drive does not support energy-saving mode
The FRITZ!Box cannot switch the USB hard drive to energy-saving mode because either the USB hard drive or the integrated USB controller on the hard drive housing does not support energy-saving mode. This is not an error on the part of the FRITZ!Box.