资料来源 : Free On-Line Dictionary of Computing

ATX
     
         An {open} {PC} {motherboard}
        specification by {Intel}.
     
        ATX is a development of the {Baby AT} specification with the
        motherboard rotated 90 degrees in the chassis.  The {CPU} and
        {SIMM} sockets have been relocated away from the {expansion
        card} slots meaning that all the slots support full-length
        cards.  More {I/O} functions are integrated on the
        motherboard.  As the longer edge of the board is now at the
        back of the chassis, there is more space for connectors; also,
        the I/O opening on the back panel of the chassis has been
        defined as double the previous height, allowing vendors to add
        extra on-board I/O functions over and above the standard.
     
        Most {Pentium Pro} boards use this {form factor}.
     
        As well as the motherboard size, layout, and placement, the
        ATX specification also includes requirements for power supply
        and fan specification and location.
     
        The full size ATX board measures 305mm wide by 244mm deep.
        There is also a Mini-ATX form factor, 284mm by 208mm.
     
        {Home
        (http://developer.intel.com/design/motherbd/atx.htm)}.
     
        (2001-07-16)