Asus M4A785D-M PRO: 1.10 Connectors

1-22 Chapter 1: Product introduction

Refer to the audio conguration table below for the function of the audio ports in 2, 4, 6, or

8-channel conguration.

Audio 2, 4, 6, or 8-channel conguration

Port Headset

4-channel 6-channel 8-channel

2-channel

Light Blue Line In Line In Line In Line In

Lime Line Out Front Speaker Out Front Speaker Out Front Speaker Out

Pink Mic In Mic In Mic In Mic In

Orange – – Center/Subwoofer Center/Subwoofer

Black – Rear Speaker Out Rear Speaker Out Rear Speaker Out

Gray – – – Side Speaker Out

12. USB 2.0 ports 1 and 2. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

13. External SATA port. This port connects to an external Serial ATA hard disk drive.

14. DVI-D port. This port is for any DVI-D compatible device. DVI-D can’t be converted to

output RGB Signal to CRT and isn’t compatible with DVI-I.

15. HDMI port. This port is for a High-Denition Multimedia Interface (HDMI) connector,

and is HDCP compliant allowing playback of HD DVD, Blu-Ray and other protected

content.

Dual display output support

• This table indicates that whether the following dual display outputs are

supported for your motherboard:

Dual display outputs Supported Not supported

DVI + D-Sub •

DVI + HDMI •

HDMI + D-Sub •

• During POST, only the monitor connected to the D-Sub port has display.

The dual display function works only under Windows.

ASUS M4A785D-M PRO 1-23

Playback of HD DVD and Blu-Ray Discs

• For better playback quality, we recommend that you follow the system

requirements listed below.

Suggested list

®

CPU AMD

Athlon 4400+

DIMM DDR2 800 (1GB or higher)

BIOS setup Frame Buffer Size--256MB or higher

Best resolution

File format

Windows XP Windows Vista

Non-protected clips 1920 x 1080p 1920 x 1080p

HD-DVD 1920 x 1080p 1280 x 1080p

Blu-Ray 1280 x 1080p 1280 x 1080p

• Supported DVD formats: VC-1, H.264, and MPEG-2.

• To play HD DVD or Blu-Ray Disc, ensure to use HDCP compliant devices

and software.

16. USB 2.0 ports 5 and 6. These two 4-pin Universal Serial Bus (USB) ports are

available for connecting USB 2.0 devices.

1-24 Chapter 1: Product introduction

1.10.2 Internal connectors

1. 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 12 V Specication 2.0-compliant power supply

unit (PSU) with a minimum of 300 W 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, ensure 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 conguring 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.

ASUS M4A785D-M PRO 1-25

2. IDE connector (40-1 pin PRI_IDE)

The onboard IDE connector is for Ultra DMA 133/100/66 signal cable. There are

three connectors on each Ultra DMA 133 / 100 / 66 signal cable: blue, black, and gray.

Connect the blue connector to the motherboard’s IDE connector, then select one of the

following modes to congure your devices:

Drive jumper setting Mode of device(s) Cable connector

Single device Cable-Select or Master - Black

Master Black

Cable-Select

Slave Gray

Two devices

Master Master

Black or gray

Slave Slave

• Pin 20 on the IDE connector is removed to match the covered hole on the Ultra DMA

cable connector. This prevents incorrect insertion when you connect the IDE cable.

• Use the 80-conductor IDE cable for Ultra DMA 133/100/66 IDE devices.

If any device jumper is set as “Cable-Select”, ensure that all other device jumpers have the

same setting.

3. Digital audio connector (4-1 pin SPDIF_OUT)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port.

The S/PDIF module is purchased separately.

1-26 Chapter 1: Product introduction

4. Serial ATA connectors (7-pin SATA1, SATA2, SATA3, SATA5, SATA6)

These connectors are for the Serial ATA signal cables for Serial ATA 3Gb/s hard disk

and optical disk drives. The Serial ATA 3Gb/s is backward compatible with Serial ATA

1.5Gb/s specication. The data transfer rate of the Serial ATA 3Gb/s is faster than the

standard parallel ATA with 133 MB/s (Ultra DMA133). If you install Serial ATA hard disk

drives, you can create a RAID 0, RAID 1, RAID 0+1, and JBOD congurations through

the onboard chipset.

®

Install the Windows

XP Service Pack 2 or later version before using Serial ATA.

• The motherboard does not provides a oppy disk drive connector. You could use a USB

®

oppy disk drive when installing Windows

XP operating system on a hard disk drive

that includes a RAID/AHCI set.

®

®

• Due to Windows

XP limitation, Windows

XP may not recognize the USB oppy disk

drive.

• For more details on RAID/AHCI, refer to the RAID/AHCI Supplementary Guide included

in the folder named Manual in the support DVD.

• If you intend to create a Serial ATA RAID set using these connectors, set the OnChip

SATA Type item in the BIOS to [RAID]. See page 2-8 for details.

5. LPT connector (26-1 pin LPT)

The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT

standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible

computers.

ASUS M4A785D-M PRO 1-27

6. System panel connector (20-8 pin PANEL)

This connector supports several chassis-mounted functions.

• System power LED (2-pin PLED)

This 2-pin connector is for the system power LED. Connect the chassis power LED

cable to this connector. The system power LED lights up when you turn on the system

power, and blinks when the system is in sleep mode.

•

Hard disk drive activity LED (2-pin IDE_LED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable

to this connector. The IDE LED lights up or ashes when data is read from or written to

the HDD.

•

System warning speaker (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.

•

ATX power button/soft-off button (2-pin PWRSW)

This connector is for the system power button. Pressing the power button turns

the system on or puts the system in sleep or soft-off mode depending on the BIOS

settings. Pressing the power switch for more than four seconds while the system is ON

turns the system OFF.

•

Reset button (2-pin RESET)

This 2-pin connector is for the chassis-mounted reset button for system reboot without

turning off the system power.

1-28 Chapter 1: Product introduction

7. USB connectors (10-1 pin USB78, USB910, USB1112)

These connectors are for USB 2.0 ports. Connect the USB module cable to any of

these connectors, then install the module to a slot opening at the back of the system

chassis. These USB connectors comply with USB 2.0 specication that supports up to

480 Mbps connection speed.

Never connect a 1394 cable to the USB connectors. Doing so will damage the

motherboard!

The USB 2.0 module is purchased separately.

8. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports

either High Denition Audio or AC`97 audio standard. Connect one end of the front

panel audio I/O module cable to this connector.

• We recommend that you connect a high-denition front panel audio module to this

connector to avail of the motherboard high-denition audio capability.

• By default, this connector is set to [HD Audio]. If you want to connect a High Denition

front panel audio module to this connector, set the Front Panel Select item in the BIOS

to [HD Audio]. See section “2.4.4 Onboard Devices Conguration” for details.

ASUS M4A785D-M PRO 1-29

9. CPU, chassis, and power fan connectors

(4-pin CPU_FAN, 3-pin CHA_FAN, 3-pin PWR_FAN)

The fan connectors support cooling fans of 350 mA~740 mA (8.88 W max.) or a total of

1 A~2.22 A (26.64 W max.) at +12V. Connect the fan cables to the fan connectors on

the motherboard, ensuring that the black wire of each cable matches the ground pin of

the connector.

Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside the

system may damage the motherboard components. These are not jumpers! Do not place

jumper caps on the fan connectors!

Only the 4-pin CPU fan connector supports the ASUS Q-FAN feature.

10. Serial port connectors (10-1 pin COM1)

The connector is for a serial (COM) port. Connect the serial port module cable to the

connector, then install the module to a slot opening at the back of the system chassis.

The serial port bracket (COM1) is purchased separately.