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

What should I put in the optical drive slot thing on my computer? disc slot 13:48 Go to channel · How to remove a CD Rom Disk that is stuck in a slot loading Apple's disco nights slot EBC BSD Slotted Brake Rotors The Uniquely created blade slot design helps to remove hot gases from the braking zone; The function of the multiple overlap slots

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