D-Link DI-714 - Manual (Page 33)

33
Password Settings
You can give your Internet gateway a new password. This password will
be required the next time and subsequent times you configure your Internet
gateway. To enter a password, type your password in the new password
field and type it again in the retype password field.
Note: It is important to remember your password. If for any reason you
lose or forget your password, there is a small reset button located on the
back of the device. Pressing this button for 3 seconds will not only reset
the password, but also the device itself—and all previous configurations
will need to be input again.