HP 826395-001 webcam module is a replacement camera component for the HP ProBook 450 G3. HP’s service guide identifies this exact part number as the webcam module spare part for that laptop.
The module sits in the display enclosure, behind the display bezel. The service procedure describes disconnecting its cable and lifting it away from the enclosure’s double-sided tape when replacing it. This is a laptop display assembly component for restoring the webcam function where this part is specified.