Hardware Reference
In-Depth Information
Figure 19.23
Installing the screws to retain the power supply.
Note
While older ATX tower cases use a top-mounted power supply, BTX and some recent ATX
tower cases, like the one shown in
Figure 19.22
, use a bottom-mounted power supply.
ATX-style motherboards have a 20- or 24-pin main power connector, plus a 4- or 8-pin
CPUpowerconnector.Botharekeyedsotheycangoononlyoneway(see
Figure19.24
)
.
Older Baby-AT and other old-style board designs such as LPX usually have two separ-
