Chapter 5: Advanced Motherboard Setup
5-9
5-7 Connector Denitions
Power Connectors
The 24-pin ATX power connector
header (JPW1) provides power to
the motherboard. PJ1 is the 12V DC
power connector that provides alter-
native power for a special enclosure
when the 24-pin ATX power is not
in use. The 4-pin power connector
J6 provides power to onboard HDD
devices.
ATX Power 24-pin Connector
Pin Denitions (JPW1)
Pin# Denition Pin # Denition
13 +3.3V 1 +3.3V
14 NC 2 +3.3V
15 COM 3 COM
16 PS_ON 4 +5V
17 COM 5 COM
18 COM 6 +5V
19 COM 7 COM
20 NC 8 PWR_OK
21 +5V 9 5VSB
22 +5V 10 +12V
23 +5V 11 +12V
24 COM 12 +3.3V
12V DC Power
Pin Denitions (PJ1)
Pin# Denition
1-2 GND
3-4 12V
4-Pin HDD Power
Pin Denitions (J6)
Pin# Denition
1 12V
2-3 GND
4 5V
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