That's because most people try to use the smallest components possivle, which means miniITX.
You can certainly use a microATX motherboard if you've got adequate space for it.
Notice how most people never seem to mention microATX mobo's and stuff, their hell of a lot cheaper and just a bit bigger, but still fit in most of the same places. lol just found that kinda funny
Car PC - Work Log
Originally Posted by DarquePervert
you can use anything if you have space for it
be it, mini-itx, micro atx, or full size, doesnt really matter, hahah