ATX or BTX
ATX motherboards are best suited to providing legacy slots and ports (such as PCI).
It is easy to confuse an 8 pin 12 volt cable and an 8 Pin PCI Express power connector in an ATX system. ATX is the most popular PC form factor in the computing world.
Any kind of home network.
There are not really any advantages with a ATX over a Micro ATX just Micro ATX is smaller and ATX is larger
It's very easy to configure POS machines for frontline, heavy use.
ATX
flex ATX above that is the micro ATX
I have often wondered what ATX in ATX software stood for. I always just ignored it but upon further inspection I have discovered that the ATX stands for Advanced Technology Extended.
There are no similar form factors to ATX if you're talking about a slimline. Slimline form factors are NLX and LPX. The form factors to ATX are BTX, Micro-ATX, and Flex-ATX. There is no correlation between slimline and ATX.
Asus is simply a manufacturer that makes atx and non-atx motherboards. Whether a motherboard is ATX or not is specific to that single model.
Yes, if it is an ATX motherboard. The motherboard specifications should say specifically if it is ATX, mini ATX, BTX, ITX, etc. Most motherboards are ATX.