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Chapter 4: Motherboard info
P4R8T
®
P4R8T ATX Power Connector
+3.3Volts
-12.0Volts
Ground
Power Supply O
n
Ground
Ground
Ground
-5.0 Volts
+5.0 Volts
+5.0 Volts
Power Good
+12.0Volts
+3.3 Volts
+3.3 Volts
Ground
+5.0 Volts
Ground
+5.0 Volts
Ground
+5V Standby
ATX12V
ATXPWR
+12V DC COM
+12V DC COM
6. ATX power connectors (20-pin ATXPWR, 4-pin ATX12V)
These connectors are for the 20-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.
See page 39 for details on the power supply unit.
5. Floppy disk drive connector (34-1 pin FLOPPY1)
This connector supports the provided floppy drive ribbon cable. After
connecting one end to the motherboard, connect the other end to the
floppy disk drive. (Pin 5 is removed to prevent incorrect insertion
when using ribbon cables with pin 5 plug).
P4R8T
®
P4R8T Floppy Disk Drive Connector
FLOPPY
NOTE: Orient the red markings o
n
the floppy ribbon cable to PIN 1.
PIN 1