im a total absolute newb.

[HAVOC]

The dimension 4550 has a MicroATX motherboard in it. I know for a fact because I serviced one about 2 weeks ago. Almost all of Dells Desktop series come with MicroATX MOBOS. I know that their XPS series is ATX and now being made with BTX MOBOS.

 

[uzi9mm]

Are the power switching mechanism on dells proprietary?????

 

[rcsavageboy]

what is proprietary?