Allied Telesis AT 8000/8POE - Manual (Page 231)

AT-S81 Management Software User’s Guide
Section II: Web Browser Interface 231
c. Click the New Password field and enter a new login password or,
if you do not want to change the password, enter the current
password. The password can be from 0 to 12 characters. Allied
Telesis recommends not using special characters, such as spaces
and exclamation points. The password is case sensitive. Leaving
this field empty deletes the current password without assigning a
new one.
d. Click the Verify New Password field and enter the same
password entered in the previous step.
e. Click Apply.