Intel AN430TX Product Specification - Page 29

Power Supply Connector, For example, in the Windows 95 Start menu, the user selects Shutdown

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Motherboard Description 1.11.1 Power Supply Connector When used with a power supply that supports remote power on/off, the motherboard can turn off the computer's power through software control. Pin 14 of the power supply connector lets the motherboard recognize a power supply that supports this "soft-off" feature; the power supply must tie pin 14 to ground. When the BIOS receives the correct APM command from the operating system, the BIOS turns off power to the computer. For example, in the Windows 95 Start menu, the user selects Shutdown to turn off the power. If power to the computer is interrupted by a power outage or a disconnected power cord, when power resumes, the computer remains in the off state until the power on switch is pressed. Table 15. Power Supply Connector (J7L1) Pin Signal Name Pin 1 +3.3 V 11 2 +3.3 V 12 3 Ground 13 4 +5 V 14 5 Ground 15 6 +5 V 16 7 Ground 17 8 PWRGD (Power Good) 18 9 +5 VSB (Standby for real-time clock) 19 10 +12 V 20 Signal Name +3.3 V -12 V Ground PS-ON# (Power Supply Remote On/Off Control) Ground Ground Ground -5 V +5 V +5 V 29

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Motherboard Description
29
1.11.1
Power Supply Connector
When used with a power supply that supports remote power on/off, the motherboard can turn off
the computer’s power through software control.
Pin 14 of the power supply connector lets the
motherboard recognize a power supply that supports this “soft-off” feature; the power supply must
tie pin 14 to ground.
When the BIOS receives the correct APM command from the operating system, the BIOS turns off
power to the computer.
For example, in the Windows 95 Start menu, the user selects Shutdown to
turn off the power.
If power to the computer is interrupted by a power outage or a disconnected power cord, when
power resumes, the computer remains in the off state until the power on switch is pressed.
Table 15.
Power Supply Connector (J7L1)
Pin
Signal Name
Pin
Signal Name
1
+3.3 V
11
+3.3 V
2
+3.3 V
12
-12 V
3
Ground
13
Ground
4
+5 V
14
PS-ON# (Power Supply Remote
On/Off Control)
5
Ground
15
Ground
6
+5 V
16
Ground
7
Ground
17
Ground
8
PWRGD (Power Good)
18
-5 V
9
+5 VSB (Standby for real-time clock)
19
+5 V
10
+12 V
20
+5 V