I want to install a 5.25" optical drive in a Chieftec BT-02B. The manufacturer advertises the presence of a 5.25 inside the case, and there is a 'flap' for the disk tray at the front, so I'm pretty sure it should be doable.
Yet, inside where the bay there is no mounting holes for the screws. I've looked at the 5.25" for factor spec, and there is no mention of alternative mounting strategies besides the standard screw holes.
So, how am I supposed to secure the drive in the bay?
Here are some pictures of the two sides of the drive bay.