Biostar U8768 U8768 user's manual - Page 18

ATX 20-pin Power Connector, JATXPWR1, 3. Hard Disk Connectors: IDE1/IDE2 - mainboard

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Chapter 1 Motherboard Description 4-2. ATX 20-pin Power Connector: JATXPWR1 PIN 1 2 3 4 5 6 7 8 9 10 Assignment 3.3V 3.3V Ground 5V Ground 5V Ground PW_OK 5V_SB 12V PIN 11 12 13 14 15 16 17 18 19 20 Assignment 3.3V -12V Ground PS_ON Ground Ground Ground -5V 5V 5V 4-3. Hard Disk Connectors: IDE1/IDE2 This mainboard has a 32-bit Enhanced PCI IDE Controller that provides PIO Mode 0~4, Bus Master, and Ultra DMA / 33, Ultra DMA / 66,Ultra DMA / 100, and Ultra DMA / 133 functionality. It has two HDD connectors IDE1 (primary) and IDE2 (secondary). • IDE1 (Primary IDE Connector) The first hard drive should always be connected to IDE1. IDE1 can connect a Master and a Slave drive. You must configure the second hard drive on IDE1 to Slave mode by setting the jumper accordingly. • IDE2 (Secondary IDE Connector) The IDE2 controller can also support a Master and a Slave drive. The configuration is similar to IDE1. The second drive on this controller must be set to slave mode. 1-15

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Chapter 1
Motherboard Description
1-15
4-2. ATX 20-pin Power Connector:
JATXPWR1
PIN
Assignment
PIN
Assignment
1
3.3V
11
3.3V
2
3.3V
12
-12V
3
Ground
13
Ground
4
5V
14
PS_ON
5
Ground
15
Ground
6
5V
16
Ground
7
Ground
17
Ground
8
PW_OK
18
-5V
9
5V_SB
19
5V
10
12V
20
5V
4-3. Hard Disk Connectors: IDE1/IDE2
This mainboard has a 32-bit Enhanced PCI IDE Controller that
provides PIO Mode 0~4, Bus Master, and Ultra DMA / 33, Ultra
DMA / 66,Ultra DMA / 100, and Ultra DMA / 133 functionality.
It
has two HDD connectors IDE1 (primary) and IDE2 (secondary).
•
IDE1 (Primary IDE Connector)
The first hard drive should always be connected to IDE1. IDE1
can connect a Master and a Slave drive. You must configure the
second hard drive on IDE1 to Slave mode by setting the jumper
accordingly.
•
IDE2 (Secondary IDE Connector)
The IDE2 controller can also support a Master and a Slave drive.
The configuration is similar to IDE1. The second drive on this
controller must be set to slave mode.