Buffalo LinkStation Pro Shared Network Storage User Manual page 36

User Management (changing passwords)
Enter the desired new password in both boxes
and click Apply.
To change an account's password, click on the
name of the account under User Settings. Note:
if a user name and password are used to log into
a user's windows computer or domain, the same
user name and password should be used when
creating the user's account on the LinkStation, or
problems accessing shared folders may occur.

Advanced Settings