ASROCK IMB-785 User manual

1
IMB-785
User Manual
Version 1.0
Published December 2013
Copyright©2013 ASRock INC. All rights reserved.

2
Version 1.0
Published December 2013
Copyright©2013 ASRock INC. All rights reserved.
Copyright Notice:
No part of this documentation may be reproduced, transcribed, transmitted, or
translated in any language, in any form or by any means, except duplication of
documentation by the purchaser for backup purpose, without written consent of
ASRock Inc.
Products and corporate names appearing in this documentation may or may not
be registered trademarks or copyrights of their respective companies, and are used
only for identication or explanation and to the owners’ benet, without intent to
infringe.
Disclaimer:
Specications and information contained in this documentation are furnished for
informational use only and subject to change without notice, and should not be
constructed as a commitment by ASRock. ASRock assumes no responsibility for
any errors or omissions that may appear in this documentation.
With respect to the contents of this documentation, ASRock does not provide
warranty of any kind, either expressed or implied, including but not limited to
the implied warranties or conditions of merchantability or tness for a particular
purpose.
In no event shall ASRock, its directors, ocers, employees, or agents be liable for
any indirect, special, incidental, or consequential damages (including damages for
loss of prots, loss of business, loss of data, interruption of business and the like),
even if ASRock has been advised of the possibility of such damages arising from any
defect or error in the documentation or product.
e terms HDMITM and HDMI High-Denition Multimedia Interface, and the HDMI
logo are trademarks or registered trademarks of HDMI Licensing LLC in the United
States and other countries.
is device complies with Part 15 of the FCC Rules. Operation is subject to the following
two conditions:
(1) this device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that
may cause undesired operation.
CALIFORNIA, USA ONLY
e Lithium battery adopted on this motherboard contains Perchlorate, a toxic substance
controlled in Perchlorate Best Management Practices (BMP) regulations passed by the
California Legislature. When you discard the Lithium battery in California, USA, please
follow the related regulations in advance.
“Perchlorate Material-special handling may apply, see www.dtsc.ca.gov/hazardouswaste/
perchlorate”
ASRock Website: http://www.asrock.com

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Contents
1 Introduction ....................................................... 5
1.1 Package Contents ......................................................... 5
1.2 Specications................................................................. 6
1.3 Motherboard Layout....................................................... 8
1.4 I/O Panel........................................................................ 10
2 Installation ......................................................... 11
2.1 Screw Holes................................................................... 11
2.2 Pre-installation Precautions ........................................... 11
2.3 Installation of Memory Modules (DIMM) ........................ 12
2.4 Expansion Slots ............................................................ 14
2.5 Jumpers Setup............................................................... 15
2.6 Onboard Headers and Connectors................................ 16
2.7 Driver Installation Guide ............................................ 20
3 UEFI SETUP UTILITY......................................... 21
3.1 Introduction .................................................................... 21
3.1.1 UEFI Menu Bar .................................................... 21
3.1.2 Navigation Keys ................................................... 22
3.2 Main Screen................................................................... 22
3.3 Advanced Screen........................................................... 23
3.3.1 CPU Conguration ............................................... 24
3.3.2 Chipset Conguration........................................... 26
3.3.3 Storage Conguration .......................................... 28
3.3.4 Intel(R) Smart Connect Technology ..................... 29
3.3.5 Super IO Conguration ........................................ 30
3.3.6 ACPI Conguration............................................... 31
3.3.7 USB Conguration ............................................... 32
3.3.8 Voltage Conguration........................................... 33
3.4 Hardware Health Event Monitoring Screen ................... 34
3.5 Boot Screen ................................................................... 35
3.6 Security Screen ............................................................. 37
3.7 Exit Screen .................................................................... 38

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4 Software Support .............................................. 39
4.1 Install Operating System................................................ 39
4.2 Support CD Information ................................................. 39
4.2.1 Running Support CD ............................................ 39
4.2.2 Drivers Menu........................................................ 39
4.2.3 Utilities Menu........................................................ 39
4.2.4 Contact Information.............................................. 39

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Chapter 1: Introduction
Thank you for purchasing ASRock IMB-785 motherboard, a reliable motherboard
produced under ASRock’s consistently stringent quality control. It delivers excellent
performance with robust design conforming to ASRock’s commitment to quality and
endurance.
In this manual, chapter 1 and 2 contain introduction of the motherboard and step-
by-step guide to the hardware installation. Chapter 3 and 4 contain the conguration
guide to BIOS setup and information of the Support CD.
Because the motherboard specications and the BIOS software might be
updated, the content of this manual will be subject to change without no-
tice. In case any modications of this manual occur, the updated version
will be available on ASRock website without further notice. You may nd
the latest VGA cards and CPU support lists on ASRock website as well.
ASRock website http://www.asrock.com
If you require technical support related to this motherboard, please visit
our website for specic information about the model you are using.
www.asrock.com/support/index.asp
1.1 Package Contents
ASRock IMB-785 Motherboard
(ATX Form Factor: 12.0-in x 9.6-in, 30.5 cm x 24.4 cm)
ASRock IMB-785 Driver CD
ASRock IMB-785 Jumper Setting Instruction
1 x I/O Panel Shield

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1.2 Specications
Form
Factor Dimensions ATX (12.0-in x 9.6-in)
Processor
System
CPU Socket LGA1150 for Intel®Core i7/i5/i3/Celeron
(Haswell)
Core
Number (By CPU, Max 4)
Max Speed (By CPU)
L3 Cache (By CPU)
Chipset H81
BIOS UEFI
Expansion
Slot
PCI 4
Mini-PCIe 0
mSATA 0
PCIe 1 (x16) + 1 (x4)
CFast Card
Socket 0
Memory
Technology Dual Channel DDR3 1066/1333/1600 MHz
SDRAM
Max. 16GB
Socket 2 x Long-DIMM
Graphics
Controller Intel®HD Graphics (By CPU)
VRAM Shared Memory
VGA Supports max resolution 2048x1536
LVDS No
HDMI Supports HDMI 1.4a, max resolution 1920x1200
DVI No
DisplayPort Supports max resolution 2560x1600
Multi Display Yes (Dual Display)
Ethernet
Ethernet 10/100/1000 Mbps
Controller LAN: Intel®I217V
Connector 1 x RJ-45
SATA
Max Data
Transfer
Rate
SATA2 (3.0Gb/S), SATA3 (6.0Gb/S)
Rear I/O
VGA 1
DVI 0
HDMI 1
DisplayPort 1
Ethernet 1

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USB 6 (2 x USB 3.0 compliant, 4 x USB 2.0
compliant)
Audio 3 (Mic-In, Line-Out, Line-In)
Serial 2 (RS-232/422/485)
PS/2 1 (Combo)
Internal
Connector
USB 4 (2 x USB Header 2.54mm pitch)
LVDS/
Inverter 0
VGA 0
Serial 4 (RS-232)
SATA 4 (2 x SATA3, 2 x SATA2)
mPCIe 0
Parallel 1
mSATA 0
IrDA 0
GPIO 8-bit 4 x GPI + 4 x GPO
SATA PWR
Output Con 0
Speaker
Header 0
Watchdog
Timer
Output Output from super I/O to drag RESETCON#
Interval 256 Segments, 0,1,2…255 Sec/Min
Power
Requirements
Input PWR ATX PWR (8 + 24)
Power On
AT/ATX Supported
-AT : Directly PWR on as power input ready
-ATX : Press button to PWR on after power
input ready
Environment Temperature 0ºC – 60ºC

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1.3 Motherboard Layout
ATXPWR1
PCI1
PCIE1
1
HD_AUDIO1
COM4
1
CMOS
Battery
HDLED RESET
PLED PWRBTN
PANEL1
1
Super
I/O
CLRCMOS1
1
BIOS
Chip
CPU_FAN1
CPU_FAN2
USB6_7
1
USB8_9
1
1
CI1
1
CI2
JGPIO_PWR1
1
PWR_JP1
1
1
LPT1
BUZZ1
1
JGP IO1
123
4
5
6
7
9
10
11
8
12
13
14
16 15
17
18
RoHS
IMB-785
Top:
LAN
USB 2.0
T: USB4
B: USB5
USB 2.0
T: USB2
B: USB3
HDMI
Top:
Line In
Center:
Line Out
Bottom:
Mic In
COM2
VGA1
COM1
PS2
Keyboard
/Mouse
DISPLAY1
PCI3
PCI4
ATX12V1
AUDIO
CODEC
PCIE3
CHA_FAN1 CHA_FAN2
COM3
1
COM6
1
COM5
1
SATA_ 4
SATA_ 0
SATA_ 5
SATA_ 1
USB 3.0
T: USB0
B: USB1
PCI2
TPM 1
1
DDR3_A1 (64 bit, 240-pin module)
DDR3_B1 (64 bit, 240-pin module)

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1 : ATX 12V Power Connector
2 : 3-Pin CPU FAN Connector
3 : 4-Pin CPU FAN Connector
4 : 24-pin ATX Power Input Connector
5 : SATA3 Connectors (SATA_0, SATA_1)
SATA2 Connectors (SATA_4, SATA_5)
6 : 3-Pin Chassis FAN Connector
7 : 4-Pin Chassis FAN Connector
8 : System Panel Header
9 : COM3, 4, 5, 6 Headers (RS232)
10 : ATX/AT mode Selection
11 : Clear CMOS Header
12 : Printer Port Header
13 : USB2.0 Headers
14 : TPM Header
15 : Digital Input / Output Pin Header
16 : Digital Input / Output Power Select
17 : Chassis Intrusion Headers
18 : Front Panel Audio Header

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1.4 I/O Panel
1 COM Port (COM1)*
2 COM Port (COM2)*
3 USB 2.0 Ports (USB2_3)
4 LAN RJ-45 Port**
5 Line In (Light Blue)
6 Line out (Lime)
7 Microphone (Pink)
8 USB 2.0 Ports (USB4_5)
9 HDMI Port (HDMI1)
10 USB 3.0 Ports (USB0_1)
11 D-Sub Port (VGA1)
12 PS/2 Mouse/Keyboard Port
13 DisplayPort (DP1)
14
3
5
6
7
8910
11
13
2
12
** There are two LEDs next to the LAN port. Please refer to the table below for the LAN port
LED indications.
LAN Port LED Indications
Activity/Link LED SPEED LED
Status Description Status Description
Off No Link Off 10Mbps connection
Blinking Data Activity Orange 100Mbps connection
On Link Green 1Gbps connection
ACT/LINK
LED
SPEED
LED
LAN Port
PIN RS232 RS422 RS485
1 DCD, Data Carrier Detect TX- RTX-
2 RXD, Receive Data RX+ N/A
3 TXD, Transmit Data TX+ RTX+
4 DTR, Data Terminal Ready RX- N/A
5 GND GND GND
6 DSR, Data Set Ready N/A N/A
7 RTS, Request To Send N/A N/A
8 CTS, Clear To Send N/A N/A
9 No Power/+5V/+12V N/A N/A
* This motherboard supports RS232/422/485 on COM1~2 ports. Please refer to below table for
the pin denition. In addition, COM1~2 ports (RS232/422/485) can be adjusted in BIOS setup
utility > Advanced Screen > Super IO Conguration. You may refer to page 30 for details.
COM1~2 Port Pin Denition

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Chapter 2: Installation
This is an ATX form factor (12.0” x 9.6”, 30.5 x 24.4 cm) motherboard. Before you
install the motherboard, study the conguration of your chassis to ensure that the
motherboard ts into it.
Make sure to unplug the power cord before installing or removing the
motherboard. Failure to do so may cause physical injuries to you and
damages to motherboard components.
2.1 Screw Holes
Place screws into the holes to secure the motherboard to the chassis.
Do not over-tighten the screws! Doing so may damage the motherboard.
2.2 Pre-installation Precautions
Take note of the following precautions before you install motherboard components
or change any motherboard settings.
1. Unplug the power cord from the wall socket before touching any component.
2. To avoid damaging the motherboard components due to static electricity,
NEVER place your motherboard directly on the carpet or the like. Also
remember to use a grounded wrist strap or touch a safety grounded object
before you handle components.
3. Hold components by the edges and do not touch the ICs.
4. Whenever you uninstall any component, place it on a grounded antistatic pad or
in the bag that comes with the component.
Before you install or remove any component, ensure that the power is
switched off or the power cord is detached from the power supply.
Failure to do so may cause severe damage to the motherboard, peripherals,
and/or components.

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2.3 Installation of Memory Modules (DIMM)
This motherboard provides two 240-pin DDR3 (Double Data Rate 3) DIMM
slots, and supports Dual Channel Memory Technology.
1. For dual channel conguration, you always need to install identical
(the same brand, speed, size and chip-type) DDR3 DIMM pairs.
2. It is unable to activate Dual Channel Memory Technology with
only one memory module installed.
3. It is not allowed to install a DDR or DDR2 memory module into a
DDR3 slot; otherwise, this motherboard and DIMM may be dam-
aged.
Installing a DIMM
The DIMM only ts in one correct orientation. It will cause permanent
damage to the motherboard and the DIMM if you force the DIMM into
the slot at incorrect orientation.

13
1
2
3

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2.4 Expansion Slots (PCI and PCI Express Slots)
There are 4 PCI slots and 2 PCI Express slots on this motherboard.
PCI slots: PCI slots are used to install expansion cards that have the 32-bit PCI
interface.
PCIE slots:
PCIE1 (PCIE x16 slot; Blue) is used for PCI Express x16 lane width
graphics cards.
PCIE3 (PCIE x4 slot; White) is used for PCI Express x4 lane width
graphics cards.
Installing an expansion card
Step 1. Before installing the expansion card, please make sure that the power
supply is switched off or the power cord is unplugged. Please read the
documentation of the expansion card and make necessary hardware
settings for the card before you start the installation.
Step 2. Remove the system unit cover (if your motherboard is already installed
in a chassis).
Step 3. Remove the bracket facing the slot that you intend to use. Keep the
screws for later use.
Step 4. Align the card connector with the slot and press rmly until the card is
completely seated on the slot.
Step 5. Fasten the card to the chassis with screws.
Step 6. Replace the system cover.

15
2.5 Jumpers Setup
The illustration shows how jumpers are
setup. When the jumper cap is placed on
pins, the jumper is “Short”. If no jumper cap
is placed on pins, the jumper is “Open”. The
illustration shows a 3-pin jumper whose
pin1 and pin2 are “Short” when jumper cap
is placed on these 2 pins.
Jumper Setting Description
Clear CMOS Jumper
(3-pin CLRCMOS1)
(see p.8, No. 11)
Note: CLRCMOS1 allows you to clear the data in CMOS. To clear and reset the
system parameters to default setup, please turn off the computer and unplug
the power cord from the power supply. After waiting for 15 seconds, use a
jumper cap to short pin2 and pin3 on CLRCMOS1 for 5 seconds. However,
please do not clear the CMOS right after you update the BIOS. If you need
to clear the CMOS when you just nish updating the BIOS, you must boot up
the system rst, and then shut it down before you do the clear-CMOS action.
Please be noted that the password, date, time, user default prole and MAC
address will be cleared only if the CMOS battery is removed.
ATX/AT Mode Selection 1-2 : AT Mode
(3-pin PWR_JP1)
2-3 : ATX Mode
(see p.8, No. 10)
Digital Input / Output Power select 1-2 : +12V
(3-pin JGPIO_PWR1)
2-3 : +5V
(see p.8, No. 16)
Clear CMOSDefault

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2.6 Onboard Headers and Connectors
Onboard headers and connectors are NOT jumpers. Do NOT place
jumper caps over these headers and connectors. Placing jumper caps
over the headers and connectors will cause permanent damage of the
motherboard!
Chassis Fan Connectors Please connect the fan cable
(4-pin CHA_FAN1) to the fan connector and
(see p.8, No. 7) match the black wire to the
ground pin.
(3-pin CHA_FAN2)
(see p.8, No. 6)
CPU Fan Connectors Please connect the CPU fan
(4-pin CPU_FAN1) cable to the connector and
(see p.8 No. 3) match the black wire to the
ground pin.
Though this motherboard provides 4-Pin CPU fan (Quiet Fan) support, the 3-Pin
CPU fan still can work successfully even without the fan speed control function.
If you plan to connect the 3-Pin CPU fan to the CPU fan connector on this
motherboard, please connect it to Pin 1-3.
Pin 1-3 Connected
3-Pin Fan Installation
GND
+12V
CHA_FAN_SPEED
FAN_SPEED_CONTROL
Digital Input / Output Pin Header
(10-pin JGPIO1)
(see p.8, No. 15)
PIN Signal Name PIN Signal Name
1 SIO_24 2 SIO_20
3 SIO_25 4 DSIO_21
5 SIO_26 6 SIO_22
7 SIO_27 8 SIO_23
9 JGPIO_PWR1 10 GND
GND
+12V
CPU_FAN_SPEED
FAN_SPEED_CONTROL
(3-pin CPU_FAN2)
(see p.8 No. 2)
GND
+12V
CPU_FAN_SPEED

17
ATX Power Input Connector Please connect an ATX power
(24-pin ATXPWR1) supply to this connector.
(see p.8 No. 4)
COM3, 4, 5, 6 Headers (RS232)
(9-pin COM3/COM4/COM5/COM6:
see p.8, No. 9)
12
1
24
13
Though this motherboard provides 24-pin ATX power connector,
it can still work if you adopt a traditional 20-pin ATX power supply.
To use the 20-pin ATX power supply, please plug your power
supply along with Pin 1 and Pin 13.
20-Pin ATX Power Supply Installation
12
1
24
13
ATX 12V Power Input Connector Please connect an ATX 12V
(8-pin ATX12V1) power supply to this connector.
(see p.8, No. 1)
8 5
4 1
Though this motherboard provides 8-pin ATX 12V power connector, it can still work
if you adopt a traditional 4-pin ATX 12V power supply. To use the
4-pin ATX power supply, please plug your power supply along
with Pin 1 and Pin 5.
4-Pin ATX 12V Power Supply Installation
8 5
4 1
System Panel Header This header accommodates
(9-pin PANEL1) several system front panel
(see p.8, No. 8) functions.
GND
GND
PWRBTN#
PLED-
PLED+
RESET#
HDLED-
HDLED+
1
DUMMY
CCTS#1
COM PWR
DDSR#1
DDTR#1
RRXD1
GND
TTXD1
DDCD#1
1
RRTS#1

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Connect the power switch, reset switch and system status indicator on the
chassis to this header according to the pin assignments below. Note the
positive and negative pins before connecting the cables.
PWRBTN (Power Switch):
Connect to the power switch on the chassis front panel. You may congure
the way to turn off your system using the power switch.
RESET (Reset Switch):
Connect to the reset switch on the chassis front panel. Press the reset
switch to restart the computer if the computer freezes and fails to perform a
normal restart.
PLED (System Power LED):
Connect to the power status indicator on the chassis front panel. The LED
is on when the system is operating. The LED keeps blinking when the sys-
tem is in S1/S3 sleep state. The LED is off when the system is in S4 sleep
state or powered off (S5).
HDLED (Hard Drive Activity LED):
Connect to the hard drive activity LED on the chassis front panel. The LED
is on when the hard drive is reading or writing data.
The front panel design may differ by chassis. A front panel module mainly
consists of power switch, reset switch, power LED, hard drive activity LED,
speaker and etc. When connecting your chassis front panel module to this
header, make sure the wire assignments and the pin assign-ments are
matched correctly.
SATA2 Connectors These two Serial ATA2 (SATA2)
(SATA_4/SATA_5: connectors support SATA data
see p.8, No. 5) cables for internal storage
devices. The current SATA2
interface allows up to 3.0 Gb/s
data transfer rate.
SATA_5
SATA_4
SATA3 Connectors These two Serial ATA3 (SATA3)
(SATA_0/SATA_1: connectors support SATA data
see p.8, No. 5) cables for internal storage
devices. The current SATA3
interface allows up to 6.0 Gb/s
data transfer rate.
SATA_1
SATA_0

19
Chassis Intrusion Headers This motherboard supports
(2-pin CI1/CI2: see p.8, No. 17) CASE OPEN detection feature
that detects if the chassis cover
has been removed. This feature
requires a chassis with chassis
intrusion detection design.
1
Signal
GND
Front Panel Audio Header This is an interface for front
(9-pin HD_AUDIO1) panel audio cable that allows
(see p.8 No. 18) convenient connection and
control of audio devices.
J_SENSE
OUT2_L
1
MIC_RET
PRESENCE#
GND
OUT2_R
MIC2_R
MIC2_L
OUT_RET
TPM Header This connector supports a
(19-pin TPM1) Trusted Platform Module (TPM)
(see p.8, No. 14) system, which can
securely store keys, digital
certicates, passwords, and
data. A TPM system also helps
enhance network security,
protects digital identities, and
ensures platform integrity.
Print Port Header This is an interface for print
(25-pin LPT1) port cable that allows
(see p.8, No. 12) convenient connection of printer
devices.
1
AFD#
ERROR#
PINIT# GND
SLIN#
STB#
SPD0
SPD1
SPD2
SPD3
SPD4
SPD5
SPD6
SPD7
ACK#
BUSY
PESLCT
1
GND
GND
S_PWRDWN#
LAD2
SMB_CLK_MAIN
PCICLK
PCIRST#
LAD3
+3V
LAD0
GND
FRAME
SMB_DATA_MAIN
LAD1
SERIRQ#
GND +3VSB
48MHz +5V
USB 2.0 Headers Besides four USB 2.0 ports on
(9-pin USB6_7/USB8_9: the I/O panel, there are two
see p.8, No. 13) headers on this motherboard.
Each USB 2.0 header can
support two ports.
NC
GND
GND
+
-
PWR
+
-
PWR
1

20
2.7 Driver Installation Guide
To install the drivers to your system, please insert the support CD to your optical
drive rst. Then, the drivers compatible to your system can be auto-detected and
listed on the support CD driver page. Please follow the order from top to bottom to
install those required drivers. Therefore, the drivers you install can work properly.