4-6
Chapter 4: Motherboard Info
2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for the 24-pin and 4-pin power plugs from the
power supply unit. The plugs from the power supply unit are designed
to fit these connectors in only one orientation. Find the proper
orientation and push down firmly until the connectors completely fit.
Do not forget to connect the 4-pin ATX12V power plug to the ATX12V
connector on the motherboard; otherwise, the system will not boot up.
R
P5L13L
P5L13L ATX Power Connector
EATXPWR
+3 V
olts
+3 V
olts
5 V
olts
+5 V
olts
Ground
Ground Power OK +5V S12 V
olts
-5 V
olts
+5 V
olts
+3 V
olts
-12 V
olts
Ground
Ground
Ground
PSON#
Ground
+5 V
olts
+12 V
olts
+3 V
olts
+5 V
olts
Ground
ATX12V
GN
D
+12V DC
GN
D
+12V DC
3. IDE connector (40-1 pin PRI_IDE)
This connector is for an IDE 100/66 signal cable, a blue connector for
the primary IDE connector on the motherboard
• Pin 20 on the IDE connector is removed to match the covered hole
on the Ultra DMA cable connector. This prevents incorrect insertion
when you connect the IDE cable.
• Use the 80-conductor IDE cable for Ultra DMA 100/66 IDE devices.
R
P5L13L
P5L13L IDE Connector
NOTE:
Orient the red markings
(usually zigzag) on the ID
ribbon cable to PIN 1.
PRI_IDE
PIN1
