D-Link DNS-327L User Manual page 430

Section 4 - Configuration
3. Go to System Management, USB Devices. Under USB
Storage Information, you will see detailed information
on the device you plugged into the DNS-327L. You can
connect an Android device but enable USB debugging.
4. When the backup is complete, the flashing white LED will
become solid white. Click and hold the USB button at the
front for over 5 seconds and the DNS-327L unmounts
the device.
DNS-327L
D-Link ShareCenter User Manual
425