2 AIMB-742 Startup Manual

The board has a number of jumpers that allow you to

configure your system to suit your application.

The table below lists the function of each of the jump-

ers and connectors.

The CD disc contains a driver installer program that will
lead you through the installation of various device driv-
ers needed to take full advantage of your motherboard.

The computer is provided with a battery-powered

Real-time Clock circuit. There is a danger of explo-

sion if battery is incorrectly replaced. Replace only

with same or equivalent type recommended by the

manufacturer. Discard used batteries according to

manufacturer's instructions

Jumpers and Connectors
Label Function
J1 CMOS clear
J2 Watchdog timer output selection
Label Function
CN1 Primary IDE connector
CN2 Secondary IDE connector
CN3 Floppy drive connector
CN4 Parallel port
CN6 USB port 4, 5
CN7 VGA connector
CN9 Serial port: COM1
CN10 Serial port: COM2
CN11 PS/2 keyboard and mouse connector
CN12 External keyboard connector
CN14 CPU FAN connector
CN15 System FAN connector 1
CN16 Power LED and Keyboard Lock
CN17 External speaker
CN18 Reset connector
CN19 HDD LED connector
CN21 ATX soft power switch (PS_ON)
CN22 HW Monitor Alarm
Close: Enable OBS Alarm
Open: Disable OBS Alarm
CN29 SM BUS Connector
PIN1: SMB_DATA
PIN2: SMB_CLOCK
CN31 USB port 0, 1 & LAN1
CN32 USB port 2, 3 & LAN2
CN37 System FAN connector 2
CN44 CF socket (Optional), Master mode only
CN55 Line Out, MIC IN connector
CN56 CD IN (Audio input from CD-ROM)
CN57 AUX IN connector
CN58 MDM IN connector
CN59 FP AUDIO connector
CN62 8-pin Alarm Board Connector
CN63 USB port 6, 7
CN64 Case Open
SA0 SerialATA 0
SA1 SerialATA 1
ATX1 ATX 12V Auxiliary power conn
ATX2 ATX power connector
J1: CMOS clear function
Pins Result
1-2 (closed) Keep CMOS data*
2-3 (closed) Clear CMOS data
J2: Watchdog timer output option
Closed pins Result
1-2 IRQ11
2-3 System reset *
Software InstallationCaution

*default setting