Hello, you need three steps,
Step 1. You can obtain default username and password on the product nameplate.
Step 2. Enter the IP address in the browser address bar and press "Enter". In the "Login" window, input "Username" and "Password" according to the product nameplate.
Step 3. Click the System Tools tab and then choose Modify Login Password from the navigation tree. In the right pane, change the password of the user.