Power Supply Connector; Power Supply Connector (J7L1) - Intel AN430TX - Motherboard - ATX Technical Product Specification

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
1 +3.3 V
2 +3.3 V
3 Ground
4 +5 V
5 Ground
6 +5 V
7 Ground
8 PWRGD (Power Good)
9 +5 VSB (Standby for real-time clock)
10 +12 V
Motherboard Description
Pin Signal Name
11 +3.3 V
12 -12 V
13 Ground
14 PS-ON# (Power Supply Remote
On/Off Control)
15 Ground
16 Ground
17 Ground
18 -5 V
19 +5 V
20 +5 V
29