Contec SPI-8451-LLVA User Manual

3. Hardware Installations 

18 

SPI-8451-LLVA, SPI-8452-LLVA, SPI-8451-LVA 

 

When used with an ATX-compliant power supply that supports remote power on/off, the CPU board can 
turn off the system power through software control. 

To enable soft-off control in software, advanced power management must be enabled in the Setup 
program and in the operation system.    When the system BIOS receives the correct APM command from 
the operating system, the BIOS turns off power to the computer.

 

Pin No.

6

5

4

3

2

1

Function

PCI_PME#

GND

PSWIN

GND

PS_ON

5VSB

Housing : XHP-6 (JST)

Contact : SXH-001T-P0.6 (JST)

CN1

1 2 3 4 5 6

PS-ON

5VSB

5VSB
PS-ON
GND

CN1

6
5
4
3
2
1

ATX Power

Control signal

 

 

5VSB 

:  Input 5V standby power from ATX power supply. 

PS_ON 

:  Output for ATX power supply On/Off control. 

PSWIN 

:  Connect power push switch. The same function as CN2-1pin (PowerBT). 

PCI_PME#  :  Connect to PME# signal of PCI bus, this CPU board can wake up from the PCI board 

which supports PME (Power Management Event) function. When you do not use this 
function, please keep open.