OK, I am here.
Unfortunately I could not solve this question completely, yes you can connect any case to Dell Inspiron 570 MT motherboard 04GJJT, this is easy once you know connector setup, which I will show below, however there is one annoying problem - every time, at each boot I got this message
Alert! Front panel not detected.
Strike the F1 key to continue, F2 to run setup utility.
And I cannot find the way to fix it. So I just press F1 on each boot, sometimes it boots fast, sometimes slow, I really hate it, but can not find any other solutions.
So, let me show power connector wire setup, please excuse me for my handwriting it is ugly.
This is number 12 from above shown diagram of our motherboard, and next is our front panel connector whose wire colors are shown on my picture.
See if you can understand what I mean.
You just take corresponding wires from CM and plug them in according to my first picture, very easy, just pay attention to NO PIN location so you see how you can apply this information.
I hope Dell can provide some help here, but I am not sure if they know this themselves.