Atx Power On/Off Control - EPOX EP-58MVP3C-M Manual

2-6 EP-58MVP3C-M

2-4 ATX Power ON/OFF Control

This mainboard equips an ATX power connector which is a single 20-PIN input
device for an ATX power supply (see Figure 2-2). An ATX power supply provides
a build-in Remote Power ON/OFF function. To implement the function, a momen-
tary switch which is normally open should be connected to the position J3(PIN 12,
13) as the system's power ON/OFF button. Note that an AT power supply does not
offer this function.
Based on the ATX power connector, this mainboard has been designed to support
both ACPI and Soft-OFF functions. According to the definition of ACPI, a
Suspend mode will be enabled while you push the J3(system power ON/OFF)
button less than 4 seconds. Nevertheless, the system will be turned off by pressing
for more than 4 seconds. Regarding the Soft-OFF(coming from this mainboard
onboard circuit controller), it is another way to turn off your system. Your system
can be shut down automatically by an operation system such as Windows 95.
EP-58MVP3C-M
BOARD
1 1
1 1
1 1 1
1
1 1 1
J3
Figure 2-2: Simple ATX Power ON/OFF Controller
1 2 3 4 5 6 7 8 9 0
1 2 3 4 5 6 7 8 9 0
>
System Power ON/OFF Button
ATX
POWER
SUPPLY