NLX, LPX, and Mini-LPX
NLX BTX ATX
NLX LPX Mini LPX
The case, motherboard, and power supply must all be the same form factor. Obviously the motherboard and the case would have to be the same or the motherboard would never fit in the case. Then the power supply must not only fit in the case, but have the same connectors as the motherboard. Otherwise it won't work.
The shape and layout of a motherboard (as well as the case) is called the form factor of the motherboard/case. Different form factors include AT (old & out of date), ATX (most common), BTX(up and coming), as well as uncommon form factors like NLX.
The three components that must have the same form factor in a computer are the case, power supply and motherboard. The case should be able to support the form factor of the motherboard and the motherboard should be able to support the CPU socket type.
power supply
Case, Power Supply and Motherboard The case must support the form factor of the motherboard, and the motherboard must support the CPU socket type for any given CPU.
Six screws usually attach the motherboard to the case via spacers or stand-offs.
Computer case.
To Prevent components on the back of the motherboard from touching the case.
assures that the mother board fits in the case. Holes in case align with ports coming off the motherboard. The holes holes in the motherboard align with the holes in the case for anchoring the board to the case.
A round plastic or metal peg that is used to separate the motherboard from the case, so that components on the back of the motherboard do not touch the case.