Aurora R12, clear side panel?

I would suggest calling either Dell tech support or Dell sales and inquire about the panel. Users in the forum have had some success doing that, if it is still for sale.

Unfortunately no. Dell makes clear side panel for R13-15, not R9-12.

https://www.digitaltrends.com/computing/alienware-new-aurora-adds-clear-side-panel-better-airflow/

Note that a clear side panel would look ugly on R12 any way because of the clam shell contraption of standard ATX psu and cluttered interior. R13 moves psu to bottom compartment following mainstream gaming pc layout to create more open space to show off cryotech led cooler.

You can make your own clear side panel, but as already mentioned, the "clam shell contraption" has to go