5 Front Speaker (Lime) 11 PS/2 Keyboard Port (Purple)
6 Microphone (Pink)
* There are two LED next to the LAN port. Please refer to the table below for the 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
LAN Port LED Indications
ACT/LINK
LED
LAN Port
SPEED
LED
To enable Multi-Streaming function, you need to connect a front panel audio cable to the front
panel audio header. After restarting your computer, you will nd “VIA HD Audio Deck” tool on
your system. Please follow below instructions according to the OS you install.
Please click “VIA HD Audio Deck” icon , and click “Advanced Options” on the left side
on the bottom. In “Advanced Options” screen, select “Independent Headphone”, and click
“OK” to save your change.
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Chapter 2: Installation
This is a Mini-ITX form factor (6.7" x 6.7", 17.0 x 17.0 cm) motherboard. Before you
install the motherboard, study the conguration of your chassis to ensure that the
motherboard ts into it.
motherboard. Failure to do so may cause physical injuries to you and
damages to motherboard components.
Make sure to unplug the power cord before installing or removing the
2.1 Screw Holes
Place screws into the holes indicated by circles 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 (SO-DIMM)
AD2550B-ITX motherboard provides two 204-pin DDR3 (Double Data Rate 3) SO-
DIMM slots.
1. It is not allowed to install a DDR or DDR2 memory module into DDR3
slot; otherwise, this motherboard and SO-DIMM may be damaged.
2. Please install the memory module from DDR3_A2 slot for the rst
priority.
Installing a SO-DIMM
Please make sure to disconnect power supply before adding or
removing SO-DIMMs or the system components.
Step 1. Unlock a SO-DIMM slot by pressing the retaining clips outward.
Step 2. Align a SO-DIMM on the slot such that the notch on the SO-DIMM
matches the break on the slot.
The SO-DIMM only ts in one correct orientation. It will cause perma-
nent damage to the motherboard and the SO-DIMM if you force the SO-
DIMM into the slot at incorrect orientation.
Step 3. Firmly insert the SO-DIMM into the slot until the retaining clips at both
ends fully snap back in place and the SO-DIMM is properly seated.
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2.4 Expansion Slot (PCI Slot)
There is 1 PCI slot on this motherboard.
PCI slot: The PCI slot is used to install expansion card that has the 32-bit PCI
interface.
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.
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2.5 ASRock Smart Remote Installation Guide
ASRock Smart Remote is only used for ASRock motherboard with CIR header.
Please refer to below procedures for the quick installation and usage of ASRock
Smart Remote.
Step1. Find the CIR header located next
to the USB 2.0 header on ASRock
motherboard.
USB 2.0 header (9-pin, black)
CIR header (4-pin, gray)
Step2. Connect the front USB cable to the
USB 2.0 header (as below, pin 1-5)
and the CIR header. Please make
USB_PWR
P-
P+
GND
DUMMY
sure the wire assignments and the
pin assignments are matched
correctly.
GND
IRTX
IRRX
ATX+5VSB
Step3. Install Multi-Angle CIR Receiver to the front USB port.
Step4. Boot up your system. Press <F2> or <Del> to enter BIOS Setup Utility.
Make sure the option "CIR Controller" is setting at [Enabled].
(Advanced -> Super IO Conguration -> CIR Controller -> [Enabled])
If you cannot nd this option, please shut down your system and install
Multi-Angle CIR Receiver to the other front USB port then try again.
Step5. Enter Windows. Execute ASRock support CD and install CIR Driver. (It is
listed at the bottom of driver list.)
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3 CIR sensors in different angles
1. Only one of the front USB port can support CIR function. When
the CIR function is enabled, the other port will remain USB
function.
2. Multi-Angle CIR Receiver is used for front USB only. Please do
not use the rear USB bracket to connect it on the rear panel.
Multi-Angle CIR Receiver can receive the multi-direction infrared
signals (top, down and front), which is compatible with most of
the chassis on the market.
3. The Multi-Angle CIR Receiver does not support Hot-Plug
function. Please install it before you boot the system.
* ASRock Smart Remote is only supported by some of ASRock motherboards. Please refer to
ASRock website for the motherboard support list: http://www.asrock.com
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2.6 Jumpers Setup
The i llu strat ion shows how ju mpers 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
illustra ti on shows a 3-p in jumper whose
pin1 and pin2 are “Short” when jumper cap
is placed on these 2 pins.
Jumper Setting Description
Clear CMOS
(CLRCMOS1, 2-pin jumper)
(see p.10 No. 11)
Note: CLRCMOS1 allows you to clear the data in CMOS. The data in CMOS in-
cludes system setup information such as system password, date, time, and
system setup parameters. To clear and reset the system parameters to de-
fault 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 2 pins
on CLRCMOS1 for 5 seconds.
2-pin jumper
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2.7 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!
Serial ATA2 Connectors These two Serial ATA2 (SATA2)
(SATAII_1: see p.10, No. 14)
(SATAII_2: see p.10, No. 6)
devices. The current SATA2
interface allows up to 3.0 Gb/s
data transfer rate.
Serial ATA (SATA) Either end of the SATA data
Data Cable cable can be connected to the
(Optional)
SATA / SATA2 hard disk or the
SATA2 connector on this
motherboard.
USB 2.0 Headers Besides the default USB 2.0
(9-pin USB4_5)
(see p.10 No. 13)
ports on the I/O panel, there
this motherboard. Each
USB 2.0 header can support
two USB 2.0 ports.
(9-pin USB6_7)
(see p.10 No. 7)
connectors support SATA data
cables for internal storage
SATAII_1
SATAII_2
are two USB 2.0 headers on
Consumer Infrared Module Header This header can be used to
(4-pin CIR1)
(see p.10 No. 10)
connect the remote controller
receiver.
Infrared Module Header This header supports an
(5-pin IR1)
optional wireless transmitting
(see p.10 No. 8)
and receiving infrared module.
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1
GND
PRE SEN CE#
MIC 2_R
MIC 2_L
MIC _RE T
J_S ENS E
OUT 2_R
OUT _RE T
OUT 2_L
Front Panel Audio Header This is an interface for front
(9-pin HD_AUDIO1)
(see p.10 No. 17)
panel audio cable that allows
convenient connection and
control of audio devices.
1. High Denition Audio supports Jack Sensing, but the panel wire on
the chassis must support HDA to function correctly. Please follow the
instruction in our manual and chassis manual to install your system.
2. If you use AC’97 audio panel, please install it to the front panel audio
header as below:
A. Connect Mic_IN (MIC) to MIC2_L.
B. Connect Audio_R (RIN) to OUT2_R and Audio_L (LIN) to OUT2_L.
C. Connect Ground (GND) to Ground (GND).
D. MIC_RET and OUT_RET are for HD audio panel only. You don’t
need to connect them for AC’97 audio panel.
System Panel Header This header accommodates
(9-pin PANEL1)
(see p.10 No. 9)
several system front panel
functions.
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 congure
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 sleep state. The LED is off when the system is in S3/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.
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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.
Chassis Speaker Header Please connect the chassis
(4-pin SPEAKER 1)
(see p.10 No. 12)
speaker to this header.
Chassis Fan Connector Please connect the fan cable
(3-pin CHA_FAN1)
(see p.10 No. 3)
to the fan connector and
match the black wire to the
ground pin.
CPU Fan Connector Please connect the CPU fan
(3-pin CPU_FAN1)
(see p.10 No. 1)
cable to the connector and
match the black wire to the
GND
+12 V
CPU _FAN _S P EE D
ground pin.
ATX Power Connector Please connect an ATX power
(24-pin ATXPWR1)
(see p.10 No. 5)
supply to this connector.
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.
12 124
13
20-Pin ATX Power Supply Installation
12
1
24
13
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2.8 Serial ATA (SATA) / Serial ATAII (SATAII) Hard Disks Installation
This motherboard adopts Intel® NM10 Express chipset that supports Serial ATA
(SATA) / Serial ATAII (SATAII) hard disks. You may install SATA / SATAII hard disks
on this motherboard for internal storage devices. This section will guide you to install
the SATA / SATAII hard disks.
STEP 1: Install the SATA / SATAII hard disks into the drive bays of your chassis.
STEP 2: Connect the SATA power cable to the SATA / SATAII hard disk.
STEP 3: Connect one end of the SATA data cable to the motherboard’s SATAII con-
nector.
STEP 4: Connect the other end of the SATA data cable to the SATA / SATAII hard
disk.
2.9 Hot Plug Function for SATA / SATAII HDDs
This motherboard supports Hot Plug function for SATA / SATAII in AHCI mode. Intel®
NM10 Express chipset provides hardware support for Advanced Host controller
Interface (AHCI), a new programming interface for SATA host controllers developed
thru a joint industry effort.
NOTE
What is Hot Plug Function?
If the SATA / SATAII HDDs are NOT set for RAID conguration, it is called “Hot
Plug” for the action to insert and remove the SATA / SATAII HDDs while the
system is still power-on and in working condition.
However, please note that it cannot perform Hot Plug if the OS has been
installed into the SATA / SATAII HDD.
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2.10 SATA / SATAII HDD Hot Plug Feature and Operation Guide
This motherboard supports Hot Plug feature for SATA / SATAII HDD in AHCI mode.
Please read below operation guide of Hot Plug feature carefully. Before you process
the SATA / SATAII HDD Hot Plug, please check below cable accessories from the
motherboard gift box pack.
A. 7-pin SATA data cable
B. SATA power cable with SATA 15-pin power connector interface
A. SATA data cable (Red) B. SATA power cable
SATA 7-pin
connector
The SATA 15-pin power
connector (Black) connect
to SATA / SATAII HDD
1x4-pin conventional
power connector (White)
connect to power supply
Caution
1. Without SATA 15-pin power connector interface, the SATA / SATAII Hot Plug
cannot be processed.
2. Even some SATA / SATAII HDDs provide both SATA 15-pin power connector and
IDE 1x4-pin conventional power connector interfaces, the IDE 1x4-pin
conventional power connector interface is denitely not able to support Hot Plug
and will cause the HDD damage and data loss.
Points of attention, before you process the Hot Plug:
1. Below operation procedure is designed only for our motherboard, which supports
SATA / SATAII HDD Hot Plug.
* The SATA / SATAII Hot Plug feature might not be supported by the chipset
because of its limitation, the SATA / SATAII Hot Plug support information of our
motherboard is indicated in the product spec on our website: www.asrock.com
2. Make sure your SATA / SATAII HDD can support Hot Plug function from your
dealer or HDD user manual. The SATA / SATAII HDD, which cannot support Hot
Plug function, will be damaged under the Hot Plug operation.
3. Please make sure the SATA / SATAII driver is installed into system properly. The
latest SATA / SATAII driver is available on our support website: www.asrock.com
4. Make sure to use the SATA power cable & data cable, which are from our
motherboard package.
5. Please follow below instructions step by step to reduce the risk of HDD crash
or data loss.
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How to Hot Plug a SATA / SATAII HDD:
Points of attention, before you process the Hot Plug:
Please do follow below instruction sequence to process the Hot Plug, improper
procedure will cause the SATA / SATAII HDD damage and data loss.
Step 1
Please connect SATA power cable 1x4-pin end
(White) to the power supply 1x4-pin cable.
SATA power cable 1x4-pin
power connector (White)
Step 2
Connect SATA data cable to
the motherboard’s SATAII connector.
Connect SATA 15-pin power cable connector
Step 3
(Black) end to SATA / SATAII HDD.
Step 4
Connect SATA data cable to
the SATA / SATAII HDD.
How to Hot Unplug a SATA / SATAII HDD:
Points of attention, before you process the Hot Unplug:
Please do follow below instruction sequence to process the Hot Unplug, improper
procedure will cause the SATA / SATAII HDD damage and data loss.
Step 1
Unplug SATA data cable from SATA / SATAII HDD side.
Step 2
Unplug SATA 15-pin power cable connector (Black) from SATA / SATAII HDD side.
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2.11 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 up to bottom side
to install those required drivers. Therefore, the drivers you install can work properly.
2.12 Installing Windows® 7 on SATA / SATAII HDDs
If you want to install Windows® 7 OS on your SATA / SATAII HDDs, please follow
below steps.
Using SATA / SATAII HDDs with NCQ function
STEP 1: Set up UEFI.
A. Enter UEFI SETUP UTILITY Advanced screen Storage Conguration.
B. Set the option “SATA Mode” to [AHCI].
STEP 2: Install Windows® 7 OS on your system.
Using SATA / SATAII HDDs without NCQ function
STEP 1: Set up UEFI.
A. Enter UEFI SETUP UTILITY Advanced screen Storage Conguration.
B. Set the option “SATA Mode” to [IDE].
STEP 2: Install Windows® 7 OS on your system.
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Chapter 3: UEFI SETUP UTILITY
3.1 Introduction
This section explains how to use the UEFI SETUP UTILITY to congure your
system. The UEFI chip on the motherboard stores the UEFI SETUP UTILITY. You
may run the UEFI SETUP UTILITY when you start up the computer. Please press
<F2> or <Del> during the Power-On-Self-Test (POST) to enter the UEFI SETUP
UTILITY, otherwise, POST will continue with its test routines.
If you wish to enter the UEFI SETUP UTILITY after POST, restart the system by
pressing <Ctl> + <Alt> + <Delete>, or by pressing the reset button on the system
chassis. You may also restart by turning the system off and then back on.
Because the UEFI software is constantly being updated, the
following UEFI setup screens and descriptions are for reference
purpose only, and they may not exactly match what you see on
your screen.
3.1.1 UEFI Menu Bar
The top of the screen has a menu bar with the following selections:
Main To set up the system time/date information
OC Tweaker To set up overclocking features
Advanced To set up the advanced UEFI features
H/W Monitor To display current hardware status
Boot To set up the default system device to locate and load the
Operating System
Security To set up the security features
Exit To exit the current screen or the UEFI SETUP UTILITY
Use < > key or < > key to choose among the selections on the menu
bar, and then press <Enter> to get into the sub screen. You can also use the
mouse to click your required item.
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3.1.2 Navigation Keys
Please check the following table for the function description of each navigation
key.
Navigation Key(s) Function Description
/ Moves cursor left or right to select Screens
/ Moves cursor up or down to select items
+ / - To change option for the selected items
<Enter> To bring up the selected screen
<F1> To display the General Help Screen
<F9> To load optimal default values for all the settings
<F10> To save changes and exit the UEFI SETUP UTILITY
<ESC> To jump to the Exit Screen or exit the current screen
3.2 Main Screen
When you enter the UEFI SETUP UTILITY, the Main screen will appear and display
the system overview.
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3.3 Advanced Screen
In this section, you may set the congurations for the following items: CPU Congu-
ration, Chipset Conguration, Storage Conguration, Super IO Conguration, ACPI
Conguration, USB Conguration and Voltage Conguration.
Setting wrong values in this section may cause
the system to malfunction.
Instant Flash
Instant Flash is a UEFI ash utility embedded in Flash ROM. This conve-
nient UEFI update tool allows you to update system UEFI without entering
operating systems rst like MS-DOS or Windows®. Just launch this tool
and save the new UEFI le to your USB ash drive, oppy disk or hard
drive, then you can update your UEFI only in a few clicks without prepar-
ing an additional oppy diskette or other complicated ash utility. Please
be noted that the USB ash drive or hard drive must use FAT32/16/12 le
system. If you execute Instant Flash utility, the utility will show the UEFI
les and their respective information. Select the proper UEFI le to update
your UEFI, and reboot your system after UEFI update process completes.
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3.3.1 CPU Configuration
Intel Hyper Threading Technology
To enable this feature, it requires a computer system with an Intel
processor that supports Hyper-Threading technology and an operating
system that includes optimization for this technology, such as Microsoft®
Windows® 7. Set to [Enabled] if using Microsoft® Windows® 7.
No-Excute Memory Protection
No-Execution (NX) Memory Protection Technology is an enhancement
to the IA-32 Intel Architecture. An IA-32 processor with “No Execute (NX)
Memory Protection” can prevent data pages from being used by malicious
software to execute code.
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3.3.2 Chipset Configuration
ACPI HPET Table
Use this item to enable or disable ACPI HPET Table. The default value is
[Enabled]. Please set this option to [Enabled] if you plan to use this
motherboard to submit Windows® certication.
Restore on AC/Power Loss
This allows you to set the power state after an unexpected AC/power loss.
If [Power Off] is selected, the AC/power remains off when the power
recovers. If [Power On] is selected, the AC/power resumes and the
system starts to boot up when the power recovers.
Onboard HD Audio
Select [Auto], [Enabled] or [Disabled] for the onboard HD Audio feature. If
you select [Auto], the onboard HD Audio will be disabled when PCI Sound
Card is plugged.
Front Panel
Select [Auto] or [Disabled] for the onboard HD Audio Front Panel.
Onboard LAN
This allows you to enable or disable the “Onboard LAN” feature.
Good Night LED
Enable this option to turn off Power LED when the system is power on.
The keyboard LED will also be turned off in S1, S3 and S4 state. The de-
fault value is [Auto].
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3.3.3 Storage Configuration
SATA2 Mode
Use this to select SATA2 mode. Conguration options: [IDE Mode], [AHCI
Mode] and [Disabled]. The default value is [IDE Mode].