ROCKY-3705EV-R2 Socket 370 Celeron
TM
, Pentium III
®
& Tualatin Processor with Ethernet , VGA , Audio Board
77
Appendix E. ATX Power Supply
The following notes show how to connect ATX Power Supply to the
backplanes and / or the ISBC card.
A. For backplanes with ATX Connector
1. Please, disconnect the AC cord of the Power Supply from the AC
source to prevent sudden electric surge to the board.
2. Please, check the type of your CPU board. All CPU board listed on
the next page support ATX power supply but has two types of power
switch connection:
2.1. ROCKY-3705EV-R2 (through Power Button & +5VSB):
Connect the ATX power supply switch to the pin 9 (power button)
and pin 19,20 (+5VSB) of CN2 on the board.
If you wish to turn off the power supply, please push the ATX
power switch button for about 4 sec. And to turn ON the system,
simply push the button once.
ROCKY-3705EV-R2 Socket 370 Celeron
TM
, Pentium III
®
& Tualatin Processor with Ethernet , VGA , Audio Board
78
B. For the backplanes with ATX power supply
connector
For some SBC without ATX power ON/OFF function, then you can
control the ATX power supply through backplane’s PS ON connector.
Refer to the figure below: for the backplanes with ATX connector,
the connection can be made simply as following:
1. Connect the ON/OFF (ordinary one) switch to Pin 2 (PS ON) and
Pin 3 (GND) of connector ATX
2. You may now turn the power ON/OFF by the power switch
