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19 Chapter 2 Installation

2.15 ATX power control connector (CN3, CN5)

2.15.1 ATX feature connector (CN3) and soft power

switch connector (CN5)

The PCI-6871 can support an advanced soft power switch function, if an

ATX power supply is used. To enable the soft power switch function:

1. Get the specially designed ATX-to-EBX power cable

(PCI-6871 optional item, part no. 1703200100)

2. Connect the 3-pin plug of the cable to CN3 (ATX feature connec-

tor).

3. Connect the power on/off button to CN5. (A momentary type of

button should be used.)

Important Make sure that the ATX power supply can take

at least a 10 mA load on the 5 V standby lead

(5VSB). If not, you may have difficulty power-

ing on your system.

Figure 2.4: Wiring for ATX soft power switch function

to CN3 ATX

features connector

ATX

power supply

to main power

connector CN11

20-pin

female connector

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Ibm CFC2 Manuale Utente Pagina 27