Chapter 1
Motherboard Description
1-20
1.6.2 ATX 20-pin Power Connector: JATXPWR1
This connector supports the power button on-board. Using the ATX
power supply, functions such as Modem Ring Wake-Up and Soft Power
Off are supported on this motherboard. This power connector supports
instant power-on functionality, which means that the system will boot up
instantly when the power connector is inserted on the board.
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
1.6.3 Hard Disk Connectors: IDE1/IDE2
The motherboard 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 functionality. It has two HDD connectors IDE1 (primary) and
IDE2 (secondary). You can connect up to four hard disk drives, a
CD-ROM, a 120MB Floppy (reserved for future BIOS) and other devices
to IDE1 and IDE2. These connectors support the IDE hard disk cable
provided.
•
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.
