EPOX nVIDIA nForce3 250Gb, User Manual, Page: 28 / 90

Installation
Page 3-12
FDD
: Floppy Controller Connector
This mainboard connects floppy disk drive.
IDE1/IDE2: Ultra DMA-100/133 Primary/Secondary
IDE Connector
This mainboard is equipped with 2 IDE connectors
to support up to 4 ATA-100/133 IDE drives.
It supports PIO and DMA mode operations for
maximum data transfer rate of 133MB/sec per channel.
PW1
40 39
2
1
IDE1/IDE2
34 33
2
1
FDD
IDE1
IDE2
FDD
PW2
When using two IDE drives, one must be set to
Master mode and the other to Slave mode. Refer to
your disk drive user’s manual for information about
selecting the proper drive switch settings.
PW1: 20-pin ATX Power Connector
PW2: 4-pin ATX12V Power Connector
The mainboard is equipped with a standard 20-pin
ATX main power connector and a 4-pin +12V
power connector for connecting an ATX12V
power supply. The plugs of the power cables are
designed to fit in only one orientation. Insert the
plugs into the connectors until they fit in place.
Caution:
The PW1 and PW2 Power Connector must be used simultaneously
or else this system will not boot-up.
1
3
1
-12V 3.3V
Ground +5V
PS-ON +5V
-5V PW-OK
+5V 5VSB
+5V +12V
+12V +12V
10
11
4
2
3.3V 3.3V
Ground Ground
Ground Ground
Ground Ground
Ground Ground
20
PW1
PW2
The board requires a minimum of 250 Watt power
supply to operate. Your system configuration (amount
of memory, add-in cards, peripherals, etc.) may
exceed this minimum power requirement. To ensure
that adequate power, use a 300 Watt or greater power
supply.