Chapter 4: Motherboards^77
that rotates the motherboard’s orientation by 90 degrees and incorporates a new set of
mounting locations and power connections. All of the I/O connections on an ATX mother-
board are in a two-row block on the back of the PC.
The standard placement of the I/O connectors on an ATX motherboard is shown in
Figure 4-3. The top row includes a PS/2-type keyboard or mouse connector, a parallel
Figure 4-2. The external connections of the LPX-style motherboard