Optical drives are going to trouble you a little longer. You should remove the faceplate and tear off the metal bracket:
The bracket doesn’t yield easily, so you have to turn it around with the tips of your fingers. This done, you just push the drive in to the level of the front panel:
And then you fix it by shifting an appropriate plastic plate forward:
The plate has a special lock which prevents it from going backward, but this is just an extra safety measure. The plate moves to and fro with some difficulty, so it is unlikely to return back without your assistance.
Scrutinizing the front panel of the case I found a few locks which can be pressed down to take the panel off altogether.
You may want to do that in only one case – to clean the intake fan dust filter.
Unlike in many other system cases I tested, this dust filter really works. Almost all air the intake fan sucks into the case comes through this filter, so you may want to avoid putting your 3D Aurora in a dusty place. You have to remove both side panels to take off the front panel. The filter itself doesn’t pull out easily – its top right corner is set against the card with the front-panel interface connectors.