Foxconn 748K7AA User Manual

Easy Installation Guide

748K7AA Layout

CD_IN Connector

Front Audio

Connector

CNR Slot (optional)

CNR AudioSelection

Jumper (optional)

1394 Connector

PCI Expansion Slots

(optional)

USB2.0 Connector

ATA 66/100/133
IDE Connectors

Speaker Connector

Front Panel

Connector

FSB100MHz CPU
Selection Jumper

ATX Power Connector

FDD Connector
8X AGP Slot

462-pin CPU Socket
SiS 748 Chipset

CPU FAN Connector

184-pin DIMM Slots

Clear CMOS Jumper

SATA

Connector

(optional)

SiS 964/964L

Chipset

Remark:

The above motherboard layout is provided for reference only;
please refer to the physical motherboard.

P/N: 91-185-U48-A0-0E

1

748K7AA Rear Panel

4

PS/2 Mouse

1

Connector
PS/2 Keyboard

2

Connector

Parallel Port
(Printer Port)

8

LAN Connector

Line-in jack

Line-out jack

Microphone
jack

9

Serial Port

3

(COM1)

1

PS/2 Mouse Connector

S/PDIF

5

Coaxial Out

Port

1394

6

Port

7

USB 2.0

Ports

This green 6-pin connector is for a PS/2 mouse.

2

PS/2 Keyboard Connector

This purple 6-pin connector is for a PS/2 keyboard.

3

Serial Port (COM1)

This 9-pin COM1 port is for pointing devices or other serial devices.

4

Parallel Port (Printer Port)

This 25-pin port connects a parallel printer, a scanner, or other devices.

5

S/PDIF Coaxial Out Port

This port connects to external audio output devices with coaxial cable connectors.

6

1394 Port (optional)
This digital interface supports electronic devices such as digital cameras,
scanners, and printers.

7

USB 2.0 Ports
These four Universal Serial Bus (USB) ports are available for connecting USB 2.0 /

1.1 devices.

8

LAN Connector

This port allows connection to a Local Area Network (LAN) through a network hub.

9

Line-in jack, Line-out jack, Microphone jack
Use the three audio ports to connect audio devices. The Line-in jack is for a tape
player or other audio sources. The Line-out jack is for a headphone or a speaker.
The Microphone jack is for a microphone. In 6-Channel mode, the function of the
three jacks becomes Rear Speaker Out, Front Speaker Out and Center/Subwoofer
Speaker respectively.

2

Accessory Checklist

748K7AA Motherboard (x1)
WinFast Utility CD (x1)

Easy Installation Guide (x1)
IDE Ribbon Cable (x1)
FDD Ribbon Cable (x1)
I/O Shield (x1)
S-ATA Signal Cable (x2) (optional)
S-ATA Power Cable (x1) (optional)
SiS 964 RAID Floppy Disk (x1) (optional)

1. Support CPU & Memory

CPU:

Supports AMD K7 CPU
Supports FSB at 200/266/333/400 MHz

Memory:

Supports PC3200/PC2700/PC2100
Supports 128/256/512 Mb technology up to 3 GB

3

2. Clear CMOS Jumper: CLS_CMOS

You can clear CMOS to restore default system setting. To clear the CMOS, follow
the procedures described below.

1. Turn off the AC power supply and connect pin 1 and 2 together using the jumper
cap .

2. Return the jumper setting to normal (pin2 and 3 together with the jumper cap).

3. Turn the AC power supply back on.

1

Clear CMOS

1

Normal (Default)

CLS_CMOS

3. FSB100 MHz CPU Selection Jumper: J8

This jumper is used to select FSB100MHz K7 CPU. The default state for J8 is
OPEN. When you want to use FSB100 MHz K7 CPU, set this jumper as CLOSE.

1

1

Open

(Default)

Close for

FSB100MHz CPU

J8

4

4. CNR Audio Selection Jumper (optional): J9

This jumper is used to set enable or disable CNR audio function. The default state
for J9 is set to disable (Pin1 & Pin2 together), then you cannot use the CNR audio
and onboard audio is avaliable. If you want to use CNR audio function, set J9 to
enable (Pin2 & Pin3 together).

1

1

Enable

CNR Audio

Disable

CNR Audio

(Default)

J9

5. Front Panel Connector: FP

Attach the power LED, IDE LED, reset switch and power switch connectors to the
corresponding pins.

IDE_LED

RESET

NC

1 +

-

+

-

FP

5

6. CPU_FAN & FAN1

Plug the CPU cooling fan cable into the 3-pin CPU_FAN power supply on the mainboard.
Connect the case cooling fan connector to FAN1.

FAN1

CPU_FAN

7. 1394 Header (optional): F_1394

The 1394 expansion cable can be connected to either the front (provided that
the front panel of your chassis is equipped with the appropriate interface) or

rear panel of the chassis.

1

2

TPA+

GND

TPB+

+12V

Empty

9

F_1394

TPA­GND
TPB­+12V
GND

10

6

8. USB Header: F_USB1, F_USB2

The USB header is available for additional USB port if the USB ports on the rear
panel are inadequate. Compared to traditional USB 1.1 with the speed of 12Mbps,
USB 2.0 has a fancy speed up to 480Mbps, which allows faster Internet connection,
interactive gaming, and simutaneous running of high-speed peripherals.

2

F_USB1

2

F_USB2

9. CD_IN Connector: CD_IN

CD_IN is Sony standard CD audio connector. It can be connected to a CD-ROM
drive through a CD audio cable.

7

10. Front Audio Connector: F_AUDIO

The audio interface provides two kinds of audio output choices: the Front Audio,
the Rear Audio. Their priority is sequenced from high to low (Front Audio to Rear
Audio). If headphones are plugged into the front panel of the chassis (using the
Front Audio), then the Line-out (Rear Audio) on the rear panel will not work. If you
do not want to use the Front Audio, pin 5 and 6, pin 9 and 10 must be SHOR T, and
then the signal will be sent to the rear audio port.

11. Speaker Connector: SPEAKER

The speaker connector is used to connect speaker of the chassis.

1

SPEAKER

8

12. 5.1 Channel Audio Effects

The motherboard is equipped with the Realtek ALC655 chip, which provides sup­port for 6-Channel audio output, including 2 front, 2 rear, 1 center and 1 subwoofer
channel. ALC655 allows the board to attach 4 or 6 speakers for a better surround
sound effect. To apply this function, you have to install the audio driver in utility CD
as well as an audio application supporting 5.1 Channel. Picture bellow repre­sents the standard location of all speakers in 5.1 Channel sound track.

Blue

Green

Center

Red

Front
Left

Rear Left

Front
Right

Rear Right

Subwoofer

13. Power on and Load Optimized Defaults

After you finish the setting of jumpers and connect correct cables, power on the
system and press <Del> during POST (Power On Self Test) to enter the BIOS Setup
Utility. Choose “Load Optimized Defaults” for recommended optimal performance.
Please make sure your system components are good enough for optimized defaults.

Select this option
and press <Enter>.

9

14. WinFast Utility CD

This motherboard comes with one Utility CD. To begin using the CD, simply insert
the CD disc into the CD-ROM drive. The CD will automatically bring up the main
menu screen. Click “Install Driver”, then click the relevant button to install IDE
Driver, AG P Driver, DirectX 9.0b, USB2.0 Driver, Audio Driver and LAN Driver from
this CD.

Follow the screen order to
install the motherboard

drivers.

10