AIMB-742 User’s Manual 6
Table 1.2: Connectors
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
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