What should I do if my browser shows a security certificate warning when accessing the HP Embedded Web Server?
If the browser displays a 'There is a problem with this website's security certificate' message, click 'Continue to this website (not recommended).' Choosing this option will not harm the computer while navigating within the EWS for the HP product. (Page 9)
From the official HP Color Laserjet Enterprise M553 manual, page 9
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