ASRock B75M R2.0: 2. Installation

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ASRock  B75M R2.0  Motherboard

2.  Installation

This is a Micro ATX form factor (9.6” x 8.4”, 24.4 x 21.3 cm) motherboard. Before 

you install the motherboard, study the con

fi

 guration of your chassis to ensure that 

the motherboard 

fi

 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 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 

components.

2.   To avoid damaging the motherboard’s 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 the components. 

3.   Hold components by the edges and do not touch the ICs. 

4.   Whenever you uninstall any component, place it on a grounded anti-

static pad or in the bag that comes with the component.

5. 

When placing screws into the screw holes to secure the mother-

board to the chassis, please do not over-tighten the screws! Doing 

so may damage the motherboard. 

      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.

English

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ASRock  B75M R2.0  Motherboard

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2.3  CPU Installation 

For the installation of Intel 1155-Pin CPU, 

please follow the steps below.

Before you insert the 1155-Pin CPU into the socket, please check if the 

CPU surface is unclean or if there are any bent pins in the socket. Do 

not force to insert the CPU into the socket if above situation is found. 

Otherwise, the CPU will be seriously damaged.

Step 1.  Open the socket:

Step 1-1.  Disengage the lever by pressing it 

down and sliding it out of the hook.

Step 1-2.  Keep the lever positioned at about 

135 degrees in order to flip up the 

load plate.

Step 2.  Remove the PnP Cap (Pick and Place Cap).

1. It is recommended to use the cap tab to handle and avoid kicking  

    off the PnP cap.

2. This cap must be placed if returning the motherboard for after  

    service.

1155-Pin Socket Overview

Contact Array

Socket Body

Load Lever

Load Plate

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ASRock  B75M R2.0  Motherboard

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Pin1

alignment  key 

alignment  key 

Pin1

1155-Pin CPU

Step 3.  Insert the 1155-Pin CPU:

Step 3-1.  Hold the CPU by the edge which is 

marked with a black line.

Step 3-2.  Orient the CPU with the IHS (Inte-

grated Heat Sink) up. Locate Pin1 

and the two orientation key notches.

For proper inserting, please ensure to match the two orientation key 

notches of the CPU with the two alignment keys of the socket.

Step 3-3.  Carefully place the CPU into the 

socket by using a purely vertical mo-

tion.

Step 3-4.  Verify that the CPU is within the sock-

et and properly mated to the orient 

keys.

Step 4.  Close the socket:

Step 4-1.  Flip the load plate onto the IHS.

Step 4-2.  Press down the load lever, and se-

cure it with the load plate tab under 

the retention tab.

black  line

orientation  key  notch

orientation  key  notch

1155-Pin  Socket

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ASRock  B75M R2.0  Motherboard

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2.4  Installation of CPU Fan and Heatsink 

This motherboard is equipped with 1155-Pin socket that supports Intel 1155-Pin 

CPUs. Please adopt the type of heatsink and cooling fan compliant with Intel 1155-

Pin CPU to dissipate heat. Before you install the heatsink, you need to spray ther-

mal interface material between the CPU and the heatsink to improve heat dissipa-

tion. Ensure that the CPU and the heatsink are securely fastened and in good con-

tact with each other. Then connect the CPU fan to the CPU_FAN connector (CPU_

FAN1, see page 2, No. 4).  

For proper installation, please kindly refer to the instruction manuals of your 

CPU fan and heatsink.

Below is an example to illustrate the installation of the heatsink for 1155-Pin CPUs.

Step 1.  Apply thermal interface material onto the cen-

ter of the IHS on the socket’s surface.

Step 2.  Place the heatsink onto the socket. Ensure 

that the fan cables are oriented on side closest 

to the CPU fan connector on the motherboard 

(CPU_FAN1, see page 2, No. 4).

Step 3.  Align fasteners with the motherboard through-

holes.

Step 4.  Rotate the fastener clockwise, then press 

down on fastener caps with thumb to install 

and lock. Repeat with remaining fasteners.

If you press down the fasteners without rotating them clockwise, the 

heatsink cannot be secured on the motherboard.

Step 5.  Connect fan header with the CPU fan connector on the motherboard.

Step 6.  Secure redundant cable with tie-wrap to ensure the cable does not 

interfere with fan operation or contact other components.

Apply Thermal

Interface Material

Fan cables on side

closest to MB header

Fastener slots

pointing straight out

Press Down

(4 Places)

Please be noticed that this motherboard supports Combo Cooler 

Option (C.C.O.), which provides 

fl

 exible options to adopt three dif-

ferent CPU cooler types, Socket LGA 775, LGA 1155 and LGA 1156. 

The white throughholes are for Socket LGA 

1155/1156 CPU fan.

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2.5  Installation of Memory Modules (DIMM)

This motherboard provides two 240-pin DDR3 (Double Data Rate 3) DIMM slots, 

and supports Dual Channel Memory Technology. For dual channel configuration, 

you always need to install two identical (the same brand, speed, size and chip-

type) memory modules in the DDR3 DIMM slots to activate Dual Channel Memory 

Technology. Otherwise, it will operate at single channel mode.

1. 

It is not allowed to install a DDR or DDR2 memory module into a 

DDR3 slot; otherwise, this motherboard and DIMM may be 

 damaged.

2. 

If you install only one memory module or two non-identical 

memory modules, it is unable to activate Dual Channel 

 Memory 

Technology.

3. 

Some DDR3 1GB double-sided DIMMs with 16 chips may not 

work on this motherboard. It is not recommended to install them 

on this motherboard.

Installing a DIMM

Please make sure to disconnect power supply before adding or 

removing DIMMs or the system components.

Step 1.  Unlock a DIMM slot by pressing the retaining clips outward.

Step 2.  Align a DIMM on the slot such that the notch on the DIMM matches the 

break on the slot.

The DIMM only 

fi

 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.

Step 3.  Firmly insert the DIMM into the slot until the retaining clips at both ends 

fully snap back in place and the DIMM is properly seated.

notch

break

notch

break

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2.6  Expansion Slots (PCI and PCI Express Slots)

There are 2 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 3.0 x16 slot) is used for PCI Express x16 lane width 

graphics cards, or used to install PCI Express graphics cards to support 

CrossFireX

TM

.

PCIE2 (PCIE 2.0 x16 slot) is used for PCI Express x4 lane width graph-

ics cards, or used to install PCI Express graphics cards to support 

CrossFireX

TM

. 

1. In single VGA card mode, it is recommended to install a PCI Express 

    x16 graphics card on PCIE1 slot.

2. In CrossFireX

TM

 mode, please install the PCI Express x16 graphics 

    cards on PCIE1 and PCIE2 slots. Therefore, PCIE1 will work at x16 

    bandwidth, while PCIE2 works at x4 bandwidth.

3. Please connect a chassis fan to the motherboard’s chassis fan 

    connector (CHA_FAN1) when using multiple graphics cards for better 

    thermal environment.

4. Only PCIE1 slot supports Gen 3 speed. To run the PCI Express in 

    Gen 3 speed, please install an Ivy Bridge CPU. If you install a Sandy 

    Bridge CPU, the PCI Express will run only at PCI Express Gen 2 

    speed.

Installing an expansion card

Step 1. 

Before installing an 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 

fi

 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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1. If a customer incorrectly con

fi

 gures their system they will not see the  

    performance bene

fi

 ts of CrossFireX

TM

. All three CrossFireX

TM

 components, a    

    CrossFireX

TM

 Ready graphics card, a CrossFireX

TM

 Ready motherboard and a   

    CrossFireX

TM

 Edition co-processor graphics card, must be installed correctly to  

    bene

fi

 t from the CrossFireX

TM

 multi-GPU platform.

2. If you pair a 12-pipe CrossFireX

TM

 Edition card with a 16-pipe card,  both cards  

    will operate as 12-pipe cards while in CrossFireX

TM

 mode.

2.7  CrossFireX

TM

 and Quad CrossFireX

TM

 Operation Guide

This motherboard supports CrossFireX

TM 

and Quad CrossFireX

TM

. CrossFireX

TM

technology offers the most advantageous means available of combining multiple 

high performance Graphics Processing Units (GPU) in a single PC. Combining a 

range of different operating modes with intelligent software design and an innovative 

interconnect mechanism, CrossFireX

TM

 enables the highest possible level of 

performance and image quality in any 3D application. Currently CrossFireX

TM

 is 

supported by Windows

®

 XP with Service Pack 2 / Vista

TM

 / 7 OS. Quad CrossFireX

TM

is supported by Windows

®

 Vista

TM

 / 7 OS only. Please check AMD’s website for AMD 

CrossFireX

TM

 driver updates.

2.7.1  Installing Two CrossFireX

TM

-Ready Graphics Cards

Different CrossFireX

TM

 cards may require different methods to enable CrossFireX

TM

feature. For other CrossFireX

TM

 cards that AMD has released or will release in the 

future, please refer to AMD graphics card manuals for detailed installation guide.

Step 1.  Insert one Radeon graphics card into PCIE1 slot and the other Radeon 

graphics card to PCIE2 slot. Make sure that the cards are properly seated 

on the slots.

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ASRock  B75M R2.0  Motherboard

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CrossFire Bridge

Step 3.  Connect the DVI monitor cable to the DVI connector on the Radeon graph-

ics card on PCIE1 slot. (You may use the DVI to D-Sub adapter to convert 

the DVI connector to D-Sub interface, and then connect the D-Sub monitor 

cable to the DVI to D-Sub adapter.)

Step 2.  Connect two Radeon graphics cards by installing a CrossFire Bridge on 

the CrossFire Bridge Interconnects on the top of the Radeon graphics 

cards. (The CrossFire Bridge is provided with the graphics card you pur-

chase, not bundled with this motherboard. Please refer to your graphics 

card vendor for details.)

or

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 The Catalyst Uninstaller is an optional download. We recommend using this  

 utility to uninstall any previously installed Catalyst drivers prior to installation.

 Please check AMD’s website for AMD driver updates.

Step 3.  Install the required drivers to your system.

For Windows

®

 XP OS: 

A. AMD recommends Windows

®

 XP Service Pack 2 or higher to be  

    installed (If you have Windows

®

 XP Service Pack 2 or higher installed  

    in your system, there is no need to download it again):

   http://www.microsoft.com/windowsxp/sp2/default.mspx

B. You must have Microsoft .NET Framework installed prior to  

    downloading and installing the CATALYST Control Center. Please    

    check Microsoft’s website for details. 

 For 

Windows

®

 7 / Vista

TM

 OS: 

Install the CATALYST Control Center. Please check AMD’s website for de-

tails. 

Step 4.  Restart your computer.

Step 5.  Install the VGA card drivers to your system, and restart your computer.

 You 

will 

fi

 nd “AMD Catalyst Control Center” on your Windows

®

 taskbar.

AMD Catalyst Control Center

2.7.2  Driver Installation and Setup

Step 1.  Power on your computer and boot into OS.

Step 2.  Remove the AMD drivers if you have any VGA drivers installed in your 

 system.

Step 6.  Double-click “ATI Catalyst Control Center”. Click “View”, select “CrossFi-

reX

TM

”, and then check the item “Enable CrossFireX

TM

”. Select “2 GPUs” 

and click “Apply”.

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ASRock  B75M R2.0  Motherboard

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Although you have selected the option “Enable CrossFire

TM

”, the CrossFireX

TM

function may not work actually. Your computer will automatically reboot. After  

restarting your computer, please con

fi

 rm whether the option “Enable    

CrossFire

TM

” in “AMD Catalyst Control Center” is selected or not; if not, please  

select it again, and then you are able to enjoy the bene

fi

 ts of CrossFireX

TM

.  

Step 7.  You can freely enjoy the bene

fi

 ts of CrossFireX

TM

 or Quad CrossFireX

TM

.

 * CrossFireX

TM

 appearing here is a registered trademark of AMD Technologies Inc., and is         

    used only for identi

fi

 cation or explanation and to the owners’ bene

fi

 t, without intent to infringe.

 * For further information of AMD CrossFireX

TM

 technology, please check AMD’s website for        

    updates and details. 

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2. If you have already installed the onboard VGA driver from our support CD to your 

    system, you can freely enjoy the bene

fi

 ts of dual monitor function after your

    system boots. If you haven’t installed the onboard VGA driver yet, please install 

    the onboard VGA driver from our support CD to your system and restart your 

    computer.

2.8  Dual Monitor and Surround Display Features

Dual Monitor Feature

This motherboard supports dual monitor feature. With the internal VGA output sup-

port (DVI-D, D-Sub and HDMI), you can easily enjoy the bene

fi

 ts of dual monitor 

feature without installing any add-on VGA cards to this motherboard. This mother-

board also provides independent display controllers for DVI-D, D-Sub and HDMI 

to support dual VGA output so that DVI-D, D-Sub and HDMI can drive the same or 

different display contents.

To enable dual monitor, please follow the steps below:

1. Connect a DVI-D monitor cable to the DVI-D port on the I/O panel, connect a 

    D-Sub monitor cable to the D-Sub port on the I/O panel or connect a HDMI 

    monitor cable to the HDMI port on the I/O panel.

HDMI port

D-Sub port

DVI-D port

D-Sub, DVI-D and HDMI monitors cannot be enabled at the same time. 

You can only choose two of them.

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Surround Display Feature

This motherboard supports surround display upgrade. With the internal VGA output 

support (DVI-D, D-Sub and HDMI) and external add-on PCI Express VGA cards, 

you can easily enjoy the bene

fi

 ts of surround display.

Please refer to the following steps to set up a surround display environment:

1. Install the PCI Express VGA cards on PCIE1 and PCIE2 slots. Please 

    refer to page 17 for proper expansion card installation procedures.

2. Connect a DVI-D monitor cable to the DVI-D port on the I/O panel, connect a 

    D-Sub monitor cable to the D-Sub port on the I/O panel, or connect an HDMI 

    monitor cable to the HDMI port on the I/O panel. Then connect other monitor 

    cables to the corresponding connectors of the add-on PCI Express VGA cards on 

    PCIE1 and PCIE2 slots.

3. Boot your system. Press <F2> or <Del> to enter UEFI setup. Enter “Share 

    Memory” option to adjust the memory capability to [32MB], [64MB], [128MB], 

    [256MB] or [512MB] to enable the function of D-sub. Please make sure that the 

    value you select is less than the total capability of the system memory. If you do 

    not adjust the UEFI setup, the default value of “Share Memory”, [Auto], will 

    disable D-Sub function when an add-on VGA card is inserted to this motherboard.

4. Install the onboard VGA driver and the add-on PCI Express VGA card driver to 

    your system. If you have installed the drivers already, there is no need to install 

    them again.

5. Set up a multi-monitor display.

    For Windows

®

 XP / XP 64-bit OS:

Right click on desktop, choose “Properties”, and select the “Settings” tab 

so that you can adjust the parameters of the multi-monitors according to 

the steps below.

A. Click the “Identify” button to display a large number on each monitor. 

B. Right-click the display icon in the Display Properties dialog that you 

    wish to be your primary monitor, and then select “Primary”. When 

    you use multiple monitors with your card, one monitor will always be 

    Primary, and all additional monitors will be designated as Secondary.

C. Select the display icon identi

fi

 ed by the number 2.

D. Click “Extend my Windows desktop onto this monitor”.

E. Right-click the display icon and select “Attached”, if necessary.

F. Set the appropriate “Screen Resolution” and “Color Quality” for the

    second monitor. Click “Apply” or “OK” to apply these new values.

G. Repeat steps C through F for the display icon identi

fi

 ed by the 

    numbers three to six.

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    For Windows

®

 7 / 7 64-bit / Vista

TM

 / Vista

TM

 64-bit OS:

Right click the desktop, choose “Personalize”, and select the “Display 

Settings” tab so that you can adjust the parameters of the multi-monitors 

according to the steps below.

A. Click the number ”2” icon.

B. Click the items “This is my main monitor” and “Extend the desktop onto 

    this monitor”.

C. Click “OK” to save your change.

D. Repeat steps A through C for the display icons identi

fi

 ed by the number 

    three to six.

6. Use Surround Display. Click and drag the display icons to positions representing 

    the physical setup of your monitors that you would like to use. The placement of 

    display icons determines how you move items from one monitor to another.

HDCP Function

HDCP function is supported on this motherboard. To use HDCP 

function with this motherboard, you need to adopt a monitor 

that supports HDCP function as well. Therefore, you can enjoy 

the superior display quality with high-de

fi

 nition HDCP 

encryption contents. Please refer to the instructions below for 

more details about HDCP function.

  What 

is 

HDCP?

HDCP stands for High-Bandwidth Digital Content Protection, a 

  speci

fi

 cation developed by Intel

®

 for protecting digital 

entertainment content that uses the DVI interface. HDCP is a 

copy protection scheme to eliminate the possibility of 

intercepting digital data midstream between the video source, 

or transmitter - such as a computer, DVD player or set-top box -  

and the digital display, or receiver - such as a monitor, television 

or projector. In other words, HDCP speci

fi

 cation is designed to 

protect the integrity of content as it is being transmitted.

Products compatible with the HDCP scheme such as DVD 

players, satellite and cable HDTV set-top-boxes, as well as few 

entertainment PCs requires a secure connection to a compliant 

display. Due to the increase in manufacturers employing HDCP 

in their equipment, it is highly recommended that the HDTV or 

LCD monitor you purchase is compatible.

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USB 2.0 header (9-pin, black) 

CIR header (4-pin, gray) 

2.9  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. 

Step2. 

Connect the front USB cable to the 

USB 2.0 header (as below, pin 1-5) 

and the CIR header. Please make 

sure the wire assignments and the 

pin assignments are matched 

 correctly. 

1 2

4

3

5

USB_PWR

P-

P+

GND

ATX+5VSB

IRRX

IRTX

GND

DUMMY

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 Con

fi

 guration -> CIR Controller -> [Enabled])

If you cannot 

fi

 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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* 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   

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.

3 CIR sensors in different angles

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2.10  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

(CLRCMOS1)

(see p.2,  No. 33)

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 

fi

 nish updating the BIOS, you must boot 

up the system 

fi

 rst, and then shut it down before you do the clear-CMOS ac-

tion. Please be noted that the password, date, time, user default pro

fi

 le, 1394 

GUID and MAC address will be cleared only if the CMOS battery is removed.

Clear CMOS

Default

If you clear the CMOS, the case open may be detected. Please adjust

the BIOS option “Clear Status” to clear the record of previous chassis

 intrusion 

status.

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2.11  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 

fi

 ve Serial ATA2 (SATA2) 

(SATA2_1: see p.2,  No. 14)

connectors support SATA data 

(SATA2_2: see p.2,  No. 19)

cables for internal storage 

(SATA2_3: see p.2,  No. 15)

devices. The current SATA2 

(SATA2_4: see p.2,  No. 16)

interface allows up to 3.0 Gb/s 

(SATA2_5: see p.2,  No. 18)

data transfer rate.

Serial ATA3 Connectors 

These three Serial ATA3 

(SATA3_A0: see p.2,  No. 7)

(SATA3) connectors support  

(SATA3_A1: see p.2,  No. 8)

SATA data cables for internal  

(SATA3_0: see p.2,  No. 9)

storage devices. The current 

SATA3 interface allows up to 6.0 

Gb/s data transfer rate.

SA

TA3_A0

SA

TA3_0       SA

TA3_A1

SATA2_1       SATA2_3

SATA2_2       SATA2_4

SATA2_5

Print Port Header 

This is an interface for print port 

(25-pin LPT1)

cable that allows convenient 

(see p.2,  No. 26)

connection of printer devices.

1

AFD#

ERROR#

PINIT#

GND

SLIN#

STB#

SPD0

SPD1

SPD2

SPD3

SPD4

SPD5

SPD6

SPD7

ACK#

BUSY

PE

SLCT

Serial ATA (SATA) 

Either end of the SATA data 

Data Cable 

cable can be connected to the 

(Optional)

SATA / SATA2 / SATA3 hard 

disk or the SATA2 / SATA3 

connector on this motherboard.

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ASRock  B75M R2.0  Motherboard

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USB 2.0 Headers 

Besides four default USB 2.0 

(9-pin USB6_7)

ports on the I/O panel, there are 

(see p.2,  No. 21)

two USB 2.0 headers on this 

motherboard. Each USB 2.0 

header can support two USB 2.0 

 ports.

(9-pin USB8_9)

(see p.2,  No. 22)

Infrared Module Header 

This header supports an 

(5-pin IR1)

optional wireless transmitting 

(see p.2,  No. 24)

and receiving infrared module.

Consumer Infrared Module Header 

This header can be used to 

(4-pin CIR1)

connect the remote controller 

(see p.2,  No. 23)

 receiver.

Front Panel Audio Header 

This is an interface for front 

(9-pin HD_AUDIO1)

panel audio cable that allows 

(see p.2,  No. 32)

convenient connection and 

control of audio devices.

1

USB_PWR

P-8

GND

DUMMY

USB_PWR

P+8

GND

P-9

P+9

USB 3.0 Header 

Besides two default USB 3.0 

(19-pin USB3_2_3)

ports on the I/O panel, there is 

(see p.2,  No. 11)

one USB 3.0 header on this 

motherboard. This USB 3.0 

header can support two USB 3.0 

 ports.

1

DUMMY

IntA_P1_D+

IntA_P1_D-

GND

IntA_P1_SSTX+

IntA_P1_SSTX-

GND

IntA_P1_SSRX+

IntA_P1_SSRX-

Vbus

IntA_P0_D+

IntA_P0_D-

GND

IntA_P0_SSTX+

IntA_P0_SSTX-

GND

IntA_P0_SSRX+

IntA_P0_SSRX-

Vbus

1

IRTX

+5VSB

DUMMY

IRRX

GND

1

ATX+5VSB

IRTX

GND

IRRX

J_SENSE

OUT2_L

1

MIC_RET

PRESENCE#

GND

OUT2_R

MIC2_R

MIC2_L

OUT_RET

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ASRock  B75M R2.0  Motherboard

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System Panel Header 

This header accommodates 

(9-pin PANEL1)

several system front panel 

(see p.2,  No. 20)

 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 con

fi

 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.

1. High De

fi

 nition 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.

    E. To activate the front mic.

         For Windows

®

 XP / XP 64-bit OS:

         Select “Mixer”. Select “Recorder”. Then click “FrontMic”.

         For Windows

®

 7 / 7 64-bit / Vista

TM

 / Vista

TM

 64-bit OS:

         Go to the “FrontMic” Tab in the Realtek Control panel. Adjust 

         “Recording Volume”.

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Chassis and Power Fan Connectors 

Please connect the fan cables 

(4-pin CHA_FAN1)

to the fan connectors and match 

(see p.2,  No. 10)

the black wire to the ground pin. 

CHA_FAN1 supports Fan 

(3-pin PWR_FAN1)

Control.

(see p.2,  No. 1)

ATX Power Connector 

Please connect an ATX power 

(24-pin ATXPWR1)

supply to this connector. 

(see p.2,  No. 6)

20-Pin ATX Power Supply Installation

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

 1

24

13

12  

 1

24

13

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)

speaker to this header.

(see p.2,  No. 17)

+5V

D

UMM

Y

D

UMM

Y

SPEAKER

1

GND

+12V

PWR_FAN_SPEED

GND

+12V

CHA_FAN_SPEED

FAN_SPEED_CONTROL

CPU Fan Connectors 

Please connect the CPU fan 

(4-pin CPU_FAN1)

cable to the connector and 

(see p.2,  No. 4)

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.

3-Pin Fan Installation

Pin 1-3 Connected

GND

+12V

CPU_FAN_SPEED

FAN_SPEED_CONTROL

1  2  3  4

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ATX 12V Power Connector   

Please connect an ATX 12V 

(4-pin  ATX12V1)

power supply to this connector.

(see p.2,  No. 2)

Serial port Header 

This COM1 header supports a 

(9-pin COM1)

serial port module. 

(see p.2,  No. 25)

Chassis Intrusion Header   

This motherboard supports

(2-pin CI1)

CASE OPEN detection feature

(see p.2,  No. 27)

that detects if the chassis cover

has been removed. This feature

requires a chassis with chassis

intrusion detection design.

1

Signal

GND

2.12  Driver Installation Guide

To install the drivers to your system, please insert the support CD to your optical 

drive 

fi

 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.

2.13  Installing Windows

®

 7 / 7 64-bit / Vista

TM 

/ Vista

TM 

64-bit / XP /                                

         XP 64-bit Without RAID Functions

If you want to install Windows

®

 7 / 7 64-bit / Vista

TM

 / Vista

TM

 64-bit / XP / XP 64-bit 

OS on your SATA / SATA2 / SATA3 HDDs without RAID functions, please follow the 

procedures below according to the OS you install.

2.13.1  Installing Windows

®

 XP / XP 64-bit Without RAID Functions

If you want to install Windows

®

 XP / XP 64-bit OS on your SATA / SATA2 / SATA3 

HDDs without RAID functions, please follow the steps below.

AHCI mode is not supported under Windows

®

 XP / XP 64-bit.

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ASRock  B75M R2.0  Motherboard

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STEP 1: Set Up UEFI.

A. Enter UEFI SETUP UTILITY        Advanced screen        Storage Con

fi

 guration.

B. Set the option “SATA Mode Selection” to [IDE]. (For SATA2_1 to SATA2_5 and 

    SATA3_0 ports.)

    Set the option “ASMedia SATA3 Mode” to [IDE]. (For SATA3_A0 and SATA3_A1 

    ports.)

STEP 2: Install Windows

®

 XP / XP 64-bit OS on your system.

Using SATA / SATA2 / SATA3 HDDs without NCQ function

2.13.2  Installing Windows

®

 7 / 7 64-bit / Vista

TM 

/ Vista

TM 

64-bit    

            Without RAID Functions

If you want to install Windows

®

 7 / 7 64-bit / Vista

TM

 / Vista

TM

 64-bit OS on your SATA 

/ SATA2 / SATA3 HDDs without RAID functions, please follow the steps below.

Using SATA / SATA2 / SATA3 HDDs without NCQ function

STEP 1: Set Up UEFI.

A. Enter UEFI SETUP UTILITY        Advanced screen        Storage Con

fi

 guration.

B. Set the option “SATA Mode Selection” to [IDE]. (For SATA2_1 to SATA2_5 and 

    SATA3_0 ports.)

    Set the option “ASMedia SATA3 Mode” to [IDE]. (For SATA3_A0 and SATA3_A1 

    ports.)

STEP 2: Install Windows

®

 7 / 7 64-bit / Vista

TM

 / Vista

TM

 64-bit OS on your 

 system.

Using SATA / SATA2 / SATA3 HDDs with NCQ function

STEP 1: Set Up UEFI.

A. Enter UEFI SETUP UTILITY        Advanced screen        Storage Con

fi

 guration.

B. Set the option “SATA Mode Selection” to [AHCI]. (For SATA2_1 to SATA2_5 and 

    SATA3_0 ports.)

    Set the option “ASMedia SATA3 Mode” to [AHCI]. (For SATA3_A0 and SATA3_A1 

    ports.)

STEP 2: Install Windows

®

 7 / 7 64-bit / Vista

TM

 / Vista

TM

 64-bit OS on your 

 system.