Logitech PRO X SUPERLIGHT Setup Manual page 9

The USB receiver can be stored inside the mouse by removing the POWERPLAY
aperture door. This can prevent the receiver from being lost when using the mouse
with the Logitech G POWERPLAY wireless charging system.
Removing this door also allows the included, optional aperture door with PTFE foot
to be installed instead of the default aperture door.
PTFE
9 ENGLISH