This equipment has been tested and found to comply with the limits of a Class
B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed
to provide reasonable p rotec tion against harmful i nterference in a resi dential
installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions , may
cause harmful interference to radio communications. There is no guarantee
that interfe re nce will not occur in a partic ular ins ta lla ti o n.
The vendor ma kes no represe ntations o r warran ties with res pec t to th e
contents here and s pecially disclaims any implied warranties of merchantability
o r fi tnes s for a ny p u rp os e . F u rt he r t he ve nd o r rese rves the ri g ht to rev ise this
publication and to make changes to the contents here without obligation to
notify any party beforehand.
D uplication of this publication, in pa rt or in whole, is no t al lo wed without fi rst
obtaining the vendor’s approval in writing.
The content of this user’s manual is subject to be changed without notice and
we will not be responsible for a ny mis takes found in this use r’s manual. A ll the
brand and produc t names are trademarks of their respective companies.
Table of Contents
Chapter 1 : In tr od ucti on.....................................................1
1.1 Before You Start...................................................................1
Tha nk you for choosing ou r pro du ct. Befo re you start ins talling the
mothe rboa rd, plea se make su re you follow the ins tructions be lo w:
Prepare a dry and stable wo rking environment with
s uffi cie nt lighting .
Always disconnect the computer from power outlet
be fo re ope ra tion .
Befo re you take the m o the rboa rd ou t f rom a n ti -s ta t i c
bag, ground yourself properly by touching any safely
grounde d ap pliance, o r use g ro unded wris t strap to
remove the static charge.
Avo id tou ch ing the compone nts o n m o the rboa rd o r the
rea r side of the board unless necessa ry. Hold the boa rd
on the edge , do not try to be nd o r flex the board .
Do not lea ve any un fastene d small pa rts inside the
case after installation. Loose parts will cause short
circuits wh ich ma y damage the equipment.
Keep the computer from dangerous area, such as heat
source, humid air and wate r.
1.2PACKAGE CHECKLIST
HDD Cable X 1 Se ria l ATA Cab le X 1
Rear I/O Panel for ATX Case X 1 Use r’s Manua l X 1 Fully Setup Driver CD X 1 Se ria l ATA Po we r Cable X 1 (o ptio na l ) FDD Cable X 1 (optional) USB 2.0 Cable X1 (optional)
S/P DI F ou t Ca ble X 1 (op tiona l)
Note: The package contents may differ by area or your motherboard version.
1
Motherboard Manual
y
r
1.3 MOTHERBOARD FEATURES
A770 A2+ A740X A2+
CPU
FSB
Chipset
Super I/O
Main
Memory
IDE
SA TA II
LAN
Sound
2
S ocket AM2 / AM2+
AM D Athlon 64 / Athlon 64 FX / Athlon 64 X2 /
Sempron / AM2+ processors
AM D 64 Arc hit ecture enables 32 and 64 bit
computing
Supports Hyper Transport 3. 0 and Cool=n=Quiet
Support HyperTrans port 3.0
Supports up to 5.2 GT/s Bandwidth
AM D 77 0
AM D SB600
ITE 8718F
Provides the most commonl
I/O functionalit y.
Low Pin Count Interfac e
Environment Control initiatives,
H/W Monitor
Fan Speed Controller
ITE's "S mar t Guardian" function
DIMM Slots x 4
Eac h DIMM supports 512/1024/2048MB DDR2
Max Memory Capicity 8GB
Dual Channel Mode DDR2 memory module
Supports DDR2 533 / 667 / 800
Supports DDR2 1066 (by AM2+ CPU)
Registered DIMM and ECC DIMM is not
support ed
Integrated IDE Controller
Ultra DMA 33 / 66 / 100 / 133 Bus M aster Mode
supports PIO Mode 0~4,
AM D S B600
Data transfer rates up to 3 Gb/s.
SA TA V ersion 2.0 specification compliant.
R AI D 0, 1, 1+ 0 s u p po rt
Real tek RTL8111C / RTL 8102E (optional )
10 / 100 Mb/s / 1Gb/s auto negotiation (Gigabit
bandw idth is for Realtek RTL8111C only)
Half / Full duplex capability
ALC662
5.1c hannels audio out
Supports HD Audio
us e d l egacy Supe
S ocket AM2 / AM2+
AM D Athlon 64 / Athlon 64 FX / Athlon 64 X2 /
Sempron / AM2+ processors
AM D 64 Arc hit ecture enables 32 and 64 bit
computing
Supports Hyper Transport 1. 0 and Cool=n=Quiet
Support HyperTrans port 1.0
Supports up to 2.0 GT/s Bandwidth
AM D 74 0X
AM D SB600
ITE 8718F
Provides t he most commonly used legacy Super
I/O functionalit y.
Low Pin Count Interfac e
Environment Control initiatives,
H/W Monitor
Fan Speed Controller
ITE's "S mar t Guardian" function
DIMM Slots x 4
Eac h DIMM supports 512/1024/2048MB DDR2
Max Memory Capicity 8GB
Dual Channel Mode DDR2 memory module
Supports DDR2 533 / 667 / 800
Supports DDR2 1066 (by AM2+ CPU)
Registered DIMM and ECC DIMM is not
support ed
Integrated IDE Controller
Ultra DMA 33 / 66 / 100 / 133 Bus M aster Mode
supports PIO Mode 0~4,
AM D S B600
Data transfer rates up to 3 Gb/s.
SA TA V ersion 2.0 specification compliant.
R AI D 0, 1, 1+ 0 s u p po rt
Real tek RTL8102E / RTL8111C (opt ional )
10 / 100 Mb/s / 1Gb/s auto negotiation (Gigabit
bandw idth is for Realtek RTL8111C only)
Half / Full duplex capability
ALC662
5.1c hannels audio out
Supports HD Audio
A770 A2+/ A740X A2+
A770 A2+ A740X A2+
PCI s lot x3 PCI s lot x3
PCI Express Gen2 x16 slot x1 PCI Express x16 slot x1 Slots
PCI Express Gen2 x1 slot x2 PCI Express x1 slot x2
Fl oppy c onnect or x1 Fl oppy c onnector x1
Printer Port connec tor x1 Printer Port connec tor x1
IDE C onnector x1 I DE Connector x1
SA TA C onnect or x4 SA TA Connector x4
Front Panel Connector x1 F ront Panel Connector x1
Front A udio Connector x1 Front Audio Connector x1
On Board
Connec tor
Back Panel
I/O
Board Size 205 mm (W) x 305 mm (L) 205 mm (W) x 305 mm (L )
OS S upport
CD- in C onnec tor x1 CD-i n C onnec tor x1
S/PDIF out connector x1 S/PDIF out connector x1
CP U Fa n header x1 C PU F an header x1
Sys tem F an header x1 S ystem Fan hea der x 1
CMOS clear header x1 CMOS clear header x1
USB connector x2 US B c onnector x2
S e ri al port Co nnect or x1 Seri al po rt Co nnect or x1
Power Connector (24pin) x1 Power Connector (24pin) x1
Power Connector (4pin) x1 Power Connector (4pin) x1
PS/2 Keyboard x1
PS/2 Mouse x1
S e ri a l P ort x 1
LAN port x1
USB Port x6
Audio Jack x3
Windows XP / VISTA
Biostar Reserves the right to add or remove
support for any OS With or without notice.
PS/2 Keyboard x1
PS/2 Mouse x1
S e ri a l P ort x 1
LAN port x1
USB Port x6
Audio Jack x3
Windows XP / VISTA
Biostar Reserves the right to add or remove
support for any OS With or without notice.
1.4REAR PANEL CONNECTORS
PS/2
Mouse
PS/2
Keyboard
COM1
USBX2
USBX2
LAN
USBX2
Line In/
Surround
Li n e Out
Mic In 1/
Bass/ Center
3
Motherboard Manual
1.5MOTHERBOARD LAYOUT
JKBMS
JCOM1
JUSB2
JUSB1
JUSBL AN
JAUDI O
LAN
JUS BV2
JK BV1
JUSB V3
JATXPWR4
JA TXPWR24
PCIE_X1_1
PCIE_X16
AMD
7 70 /
740X
CPUFAN
Socket A M2
DIMMA1
DIMMB1
DIMMB2
DIMMA2
IDE
JCMOS1
BAT1
4
Super I /O
Codec
JAUDIOF
Note: represents the 1■
JCDIN
PCIE_X1_2
JSPDIF_OUT
PCI1
PCI2
PCI3
J PRNT
JUS BV1
st
pin.
FDD
J USB3
BIOS
AMD
SB600
J USB4
SATA4
SATA3SATA2
JCOM 2
SYSFAN
SATA1
JPANEL
A770 A2+/ A740X A2+
CHAPTER 2: HARDWARE INSTALLATION
2.1 INSTALLING CENTRAL PROCESSING UNIT (CPU)
Step 1: Remove the socket protection cap.
Step 2: Pull the lever toward direction A from the socket and then rai se the
lever up to a 90-degree angle.
Step 3: Look for the white triangle on socket, and the gold triangle on
CPU should point towards thi s white triangle. The CPU will fit onl y
in th e cor r ec t or i en t at io n.
5
Motherboard Manual
Step 4: Hol d the CPU down firmly, and then close the l ever toward di rect
B to complete the install ation.
Step 5: Pu t the CPU Fan on the CPU and bu c kl e it. Conn ect t he CPU
FAN power cable to the CPUFAN. This completes the i nstallation.
Note: Ple ase upd ate the B IOS to the latest version while using A M2+ CPUs. Due to the lates t CPU
transition, you may encounter the situation that the new system failed t o boot while using new
AM2+ CPUs. In this c ase, please i nstall one standar d AM2 CPU to boot your s ystem, and
update the latest BIOS from our website for AM2+ CPUs support.
6
A770 A2+/ A740X A2+
2.2 FANHEADERS
These fan headers support cooling-fans built in the computer. The fan
cable and connector m ay be different accordi ng to the fan m anufacturer.
Connect the fan cable to the connector while matching the black wire to
pin#1.
CPUFAN: CPU Fan Header
14
SYSF A N: System Fa n Header s
1
3
Pin
Assignment
1 Ground
2 +12V
3
FAN RPM rate
sense
4 Smart Fan
Control (By Fan)
Pin Assignment
1 Ground
2 +12V
3
FAN RPM rate
sense
Note:
The CPUFAN and SYSFAN support 4-pin and 3-pin head connector. When connecting
with wires onto c onnect ors, please note that the red wire is the positi ve and shoul d be
connected to pi n#2, and the blac k wire is Ground and should be connected to GND.
7
Motherboard Manual
2.3 INSTALLING SYST EM MEMORY
A. DDR2 Mo du les
DIMMA1
DIMMB1
DIMMA2
DIMMB2
1. Unlock a DIMM sl ot by pressing the retaining clips outward. Align a
DIM M on the sl ot such that the notch on the DIMM matches the
break on the Slot.
2. Insert the DIMM vertically and firmly into the sl ot until the retaining
chip snap back in place and the DIMM is properly seated.
To t rigger t he Dual C hannel function of t he mot herboard, the mem ory module
must mee t the following requiremen t s:
Install memory m odule of t he same density in pairs, shown in t he f ollowing
table.
Du al Channel Status
Enabled O O X X
Enabled X X O O
Enabled O O O O
(O m eans memory installed, X means mem ory not installed.)
The DRAM bus width of the memory m odule must be the same (x8 or
x16)
DIMMA 1
DIMMB1 DIMMA2 DIMMB2
9
Motherboard Manual
2.4 CONNECTORS AND SLOTS
FDD: Floppy Disk Connector
The motherboard prov ides a standard floppy disk connector that supports 360K,
720K, 1. 2M, 1.44M and 2.88M floppy disk types. This connector support s the
provided f loppy driv e ribbon cables .
234
133
IDE: H ard Disk Con nector
The motherboard has a 32-bit Enhanc ed IDE Cont roller that prov ides PIO Mode
0~4, Bus Mast er, and Ultra DMA 33/ 66/100/133 functionality .
The IDE connector c an connect a m aster and a s lave driv e, so y ou can c onnect
up to two hard dis k driv es.
- Maximum theoretical realized bandwidth of 8GB/s sim ult aneously per
direct ion, f or an aggregat e of 16GB/ s totally.
PCIE_X1_1/PC IE_X1_2: PCI-Expre ss Gen2 x1 Slots (for A770 A2+)
- PCI -Ex press 2.0 c ompliant.
- Dat a transfer bandwidt h up to 500MB/s per direc t ion; 1GB/s in t ot al.
- PCI -Ex press Gen2 s upports a raw bit-rate of 5. 0Gb/s on the data pins .
- 2X bandwidth ov er the PC I -Express 1. 0 archit ecture.
PCIE_X16: PCI-Express x16 Slot (for A740X A2+)
- PCI -Ex press 1.0a c ompliant.
- Maximum theoretical realized bandwidth of 4GB/s sim ult aneously per
direct ion, f or an aggregat e of 8GB/ s totally.
PCIE_X 1_1/PCI E_X 1_2: P CI -Expres s x1 S lot s (fo r A7 40X A2+ )
- PCI -Ex press 1.0a c ompliant.
- Dat a transfer bandwidt h up to 250MB/s per direc t ion; 500MB/s in t otal.
- PCI -Ex press supports a raw bit -rate of 2.5GB/s on the dat a pins.
- 2X bandwidth ov er the t radit ional PCI archit ecture.
PCI E_X1_1
PCI E_X16
PCI E_X1_2
11
Motherboard Manual
PCI1~ PCI3: Peri pheral Com ponent Interconne ct Sl o ts
This mot herboard is equipped with 3 standard PCI slot s. PCI st ands f or
Peripheral Com ponent I nt erconnect, and it is a bus standard f or expans ion
cards . This PCI slot is des ignated as 32 bits.
PCI1
PCI2
PCI3
12
A770 A2+/ A740X A2+
CHAPTER 3: HEADERS & JUMPERS SETUP
3.1 HOW TO SETUP JUMPERS
The illustration shows how to set up jumpers. When the jumper cap is
placed on pins, the jumper is “close”, if not, that means the jumper is
“open”.
Pin opened Pin closed Pin1-2 closed
3.2 DETAIL SETT INGS
JPANEL: Front Panel Header
This 16-pin connector includes Power-on, Res et, HDD LED , Power LED, and
speak er connection. It allows user t o connec t the PC c ase’s f ront panel s witc h
functions.
D
E
L
_
R
W
P
+
916
1
+
+
K
P
S
HLE
f
f
O
O
n
/
-
8
-
T
S
R
D
Pin Assignment Functio n Pin Assignment Function
1 +5V 9 N/A
2 N/A 10 N/A
3 N/A 11 N/A N/A
4 Speaker
5 HDD LED (+) 13 Powe r LED (+)
6 HDD LED (-)
7 Ground 15 Power button
8 Reset control
Speaker
Connector
Hard drive
LED
Reset button
12 Power LED (+)
14 Power LED (-)
16 Ground
N/A
Powe r LED
Power-on button
13
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