ATX-style motherboards have a 20- or 24-pin main power connector, plus a 4- or 8-pin CPU power
connector. Both are keyed so they can go on only one way (see Figure 19.24). Older Baby-AT and
other old-style board designs such as LPX usually have two separate six-wire power connectors from
the power supply to the board; refer to Chapter 18 for important information on proper installation
of Baby-AT power supplies. To attach the power connectors from the power supply to the motherboard,
do the following: