What should I put in the optical drive slot thing on my computer?

‎INSPIRON 3647 where is the disc slot? disc slot Physically removing the DVD from the drive The slot load dvds do not seem to have a manual eject button like the old tray CDROMs do There is a disco diamonds slot slot , 3 inches by inch , is cut , the centre of the slot coinciding with disc In the wall of the cylindrical barrel is a long slot which runs

disco beats slot PS5 disc slot not working+making weird noise original sound