Technical information

3-2 EP-5ATXA-M

EP-5ATXA-M

BOARD

ATX

POWER

SUPPLY

Figure 3-3: Simple ATX Power ON/OFF Controller

The EP-5ATXA-M supports ATX power connector which is a single 20-PIN input

device for ATX power supply (see Figure 3-3). To implement the built-in Remote

ON/OFF function on ATX power supply, a momentary switch which is normally

open should be connected to the position JP9 as the system ON/OF button.

Based on the ATX power connector, the EP-5ATXA-M has been designed to

support both ACPI and Soft-OFF functions. According to the definition of ACPI, a

Suspense mode will be enabled while you push the J9 (system 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 the EP-5ATXA-M 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.

The EP-5ATXA-M is equipped with a standard I/O back pannel featuring a serial

port, PS/2 mouse port, PS/2 keyboard port, parallel port, and secondary serial port

(refer to Figure 3-2 ).

Figure 3-2: EP-5ATXA-M I/O back panel Layout

System Power ON/OFF

Switch