D-Link ShareCenter DNS-340L User Manual page 100

Section 4 - Configuration
To change the settings for volume encryption, you need to enter the
Original Password in the field provided. Alternatively, click the Browse
button to upload an Encrypted Key File which is saved on the local
computer.
Click Next to continue.
Select the Auto-Mount check box to have the system mount the volume
automatically. Enter a new password in the New Password and Confirm
Password fields.
Click Apply to continue.
D-Link ShareCenter DNS-340L User Manual 98