How to open my DELL E310 CPU Case

[MikeE]

Can someone please explain to me how to open my Dell Demension E310 Computer case? I seem to have lost my owner's manual.

Thanks,
-MikeE

 

[dustinl15]

on the newer Dells they have a black lever on the top at the back. if you push or pull it to the back of the machine the side will just open up.