Asus AT3GC-I User Manual Page 20
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6. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)
These connectors are for an ATX power supply. The plugs from the power supply are
designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.
•
We recommend that you use an ATX 12V Specication 2.0-compliant power supply unit
(PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin power
plugs.
•
If you intend to use a PSU with 20-pin and 4-pin power plugs, make sure that the 20-pin
power plug can provide at least 15 A on +12 V and that the PSU has a minimum power
rating of 300 W. The system may become unstable or may not boot up if the power is
inadequate.
• DO NOT forget to connect the 4-pin ATX +12 V power plug; otherwise, the system will
not boot up.
• We recommend that you use a PSU with higher power output when conguring a
system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.
• If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.
AT3GC-I
AT3GC-I ATX power connectors
EATXPWR
PIN 1
GND
+5 Volts
+5 Volts
+5 Volts
-5 Volts
GND
GND
GND
PSON#
GND
-12 Volts
+3 Volts
+3 Volts
+12 Volts
+12 Volts
+5V Standby
Power OK
GND
+5 Volts
GND
+5 Volts
GND
+3 Volts
+3 Volts
ATX12V
PIN 1
+12V DC
+12V DC
GND
GND
+5V
GND
GND
Speaker Out
SPEAKER
PIN 1
AT3GC-I
AT3GC-I Speaker Out Connector
7. Speaker connector (4- pin SPEAKER)
This 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.
Chapter 1: Product introduction1-11
- Motherboard 1
- First Edition V1 2
- June 2009 2
- Contents 3
- Safety information 6
- About this guide 6
- Where to nd more information 7
- Typography 7
- AT3GC-I specications summary 8
- Chapter 1 10
- 1.2 Motherboard overview 11
- 1.4 System memory 12
- 1.5 Expansion slots 13
- 1.6 Jumpers 14
- AT3GC-I USB Device Wake Up 15
- 1.7 Connectors 16
- 1.7.2 Internal connectors 17
- NOTE:Orient the red markings 18
- AT3GC-I fan connectors 19
- AT3GC-I Speaker Out Connector 20
- 1-12ASUS AT3GC-I 21
- Chassis Signal 22
- +5VSB_MB 22
- 1.8 Software support 23
- Chapter 2 24
- Updating from a BIOS file 25
- Recovering the BIOS 26
- 2.2 BIOS setup program 27
- 2.3 Main menu 27
- 2.3.4 SATA 1-2 28
- 2.3.5 Storage Conguration 29
- 2.3.6 System Information 29
- 2.4 Advanced menu 30
- 2.4.2 CPU Conguration 31
- 2.4.3 Chipset 31
- DVMT/FIXED Memory [128MB] 32
- LAN Option ROM [Disabled] 32
- Serial Port1 Mode [Normal] 32
- Parallel Port IRQ [IRQ7] 32
- 2.5 Power menu 33
- 2.5.1 Suspend Mode [Auto] 34
- 2.5.4 APM Conguration 34
- 2.6 Boot menu 35
- 2.6.1 Boot Device Priority 36
- 2.6.3 Security 36
- Change User Password 37
- Clear User Password 37
- Password Check [Setup] 37
- 2.7 Tools menu 38
- 2.8 Exit menu 38
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