Mo-vis Multi Joystick Omni Manual Del Usuario página 19

Unit detail
The connections of the Multi Joystick unit have protective covers to avoid the
intrusion of dust and moisture during usage.
CAUTION:
CAUTION:
the connections are not used.
18
Before inserting a connector, remove the protective cover.
Always put the protective covers in, or keep them, in case
Multi Joystick User manual