D-Link ShareCenter DNS-320 User Manual page 196

Section 4 - Configuration
3. When the backup is complete, the flashing blue LED will become
solid blue. To unmount the USB storage device, you can click and
hold the USB button at the front of the DNS-320 or you can go to
the USB Devices menu of the System Management icon in the
Management Tab of the Web GUI of the device. Click the blue arrow
to reveal the USB Storage information. Click the Unmount button
to eject the USB device.
D-Link ShareCenter DNS-320 User Manual 192