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. Its configuration
is similar to IDE1. The second drive on this controller must be set to slave mode.
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