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? pc case with dvd drive slot Find the perfect case with advanced cooling, customizable RGB lighting, and versatile configurations to build your ideal computer setup Discover top-tier pcie slot I think the last pc I built with an optical drive would have been circa 2010? My case actually has a slot for a slim slot-loading drive I

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