NEC NP04Wi Installation Manual page 13

 Fix the cable cover on the projector.
For U321H
Require three screws and the attachment.
 Mount the attachment on the projector.
Put the projector bottom face up and push two protrusions on the attachment in the fixing holes
on the projector, then align the position of the fixing holes. Fasten them by two screws.
 Fix the camera unit on the attachment.
Put the projector facing up and engage two protrusions on the holder in the fixing holes on the
holder, then align the position of the fixing holes. Fasten them by one screw.
ENG-11