I can't say about what ATX form it is, but Dell motherboards are only partially ATX compatible with standard motherboard mounting screw holes.  The rear motherboard I/O shield is built into the case so you will have to make your own for a standard case.  The front panel connections are proprietary and undocumented and can vary from one model to another (e.g. what is used in an 8900 may not be the same in an 8930).  Dell uses proprietary case and CPU cooler fans, you can get around that with fan power connector adapters.  There are only two fan connections on the motherboard, one for the CPU cooler fan and the other for a case fan. Here is the link to the Dell service manual:  [URL] If you feel you can deal with these issues go for it.  If not, I'd advise not to attempt it and start saving for custom/home built ATX standard PC.    
Hello, I am looking to change the case of my Dell XPS 8930, but I have some questions about some modifications others have had to do in previous posts. I want to change my case in order to have more space and better cooling, as I'm thinking of getting a new GPU and I've read about and am having some heat problems with the current case. My first question is about the form factor of the motherboard. I saw in another forum post that it's Micro ATX, but I can't confirm it in any manual. Is the form factor Micro ATX, or is it proprietary? I've also seen posts about having to modify the front I/O cord to fit into the motherboard's plug, and issues with the plugs for the front USB slots. This video (it is an 8900, but I don't think they are that different) has the owner clipping the I/O cord, which makes me nervous: [URL] This forum post also talks about some issues with the USB plugs and front I/O, or from what I can understand. [URL] Finally, I've read a couple times that the motherboard cannot support multiple fans. Does the motherboard only support one fan, and does it only support the fan inside the current case? I'm new to all of this, so any information and advice is welcome.
XPS 8930, questions about a case swap