Most of the Apevia cases are the same setup..
2-4 screws to anchor it, and then 4-6 Compression posts to hold it in...
Both sides have to be taken off...
The screws removed, and then you have to press together the ends of the posts sticking through, while pulling on the front... just be careful not to snag or yank the wiring harness or youll have to repair the front panel connections...