Motherboard size Distinction

The plate type is mainly divided into: ATX (Standard type), M-ATX (compact), Μatx, MINI-ITX (mini), e-atx (Reinforced)
E-atx (Reinforced: Extended ATX, long 305mm* width 330mm, as long as the length remains 305mm, and width of 244mm are called E-atx motherboard
ATX (standard type): Commonly known as "Big Board", long 305mm* width 244mm, some nonstandard in the width of the increase.
m-atx (compact type): Micro ATX, commonly known as small board ", long and wide are 244mm
MINI-ITX (Mini): Long width is 170mm*170mm