Nvidia 400 User Manual download pdf (Page 30)

Installation

Page 3-14

3-7 External Modem Ring-in Power ON and

Keyboard Power ON Functions (KBPO)

Modem-Ring Power ON Function

The mainboard supports External Modem Ring-in Power ON function. Once you connect

an external modem to COM1 or COM2, you can turn on the system through remote and

host dial-up control.

Keyboard Power ON Function

The mainboard features a keyboard power on function to turn on the power supply

using a keypress. Refer to the Power Management Setup in the BIOS setup section

for details. To enable this feature, the BIOS default setting is Keyboard Hot Key

(<Ctrl> + <F1>). To power off the system, use the Soft-OFF function under Windows

XP/ME/2000/98. (refer to Windows online help).

3-6 Power-On/Off (Remote)

This board has a 20-pin ATX and a 4-pin ATX12V power supply connector to support

power supplies with Remote On/Off feature. The 4-pin ATX12V connector must be

plugged in for the system to operate safely. The chassis power button should be

connected to the mainboard front panel PW_ON header (Figure 7).

You can turn off the system in two ways: by pressing the front panel power On/Off

button or using the "Soft Off" function that can be controlled by an operating

system such as Windows

XP/ME/2000/98.

Note: For maintaining the DDR SDRAM power during STR (ACPI S3) function, it is strongly

recommended to use power supplies that have a +5VSB current of (>=) 2A. Please check the

5VSB’s specification printed on the power supply’s outer case.

Note: The board requires a minimum of 250 Watt power supply to operate. Your system configura-

tion (amount of memory, add-in cards, peripherals, etc.) may exceed this minimum power

requirement. To ensure that adequate power, use a 300 Watt (or higher) power supply.

12V 4-pin

20-pin

Figure 7: Simple ATX power ON/OFF controller

PW-ON

Case (chassis) Power

ON/OFF button (PW-ON)

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Nvidia 400 User Manual Page 30