Intel DZ68AF User manual

Intel®Desktop Board DZ68AF
Product Guide
Order Number: G42417-001

Revision History
Revision Revision History Date
-001 First release of the Intel®Desktop Board DZ68AF Product Guide September 2011
Disclaimer
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product descriptions at any time, without notice.
Intel Desktop Board DZ68AF may contain design defects or errors known as errata which may cause the
product to deviate from published specifications. Current characterized errata are available on request.
Contact your local Intel sales office or your distributor to obtain the latest specifications and before placing
your product order.
Copies of documents which have an ordering number and are referenced in this document, or other Intel
literature, may be obtained from Intel Corporation by going to the World Wide Web site at:
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* Other names and brands may be claimed as the property of others.
Copyright © 2011, Intel Corporation. All rights reserved.

iii
Preface
This Product Guide gives information about board layout, component installation, BIOS
update, and regulatory requirements for Intel®Desktop Board DZ68AF.
Intended Audience
The Product Guide is intended for technically qualified personnel. It is not intended for
general audiences.
Use Only for Intended Applications
All Intel Desktop Boards are evaluated as Information Technology Equipment (I.T.E.)
for use in personal computers (PC) for installation in homes, offices, schools, computer
rooms, and similar locations. The suitability of this product for other PC or embedded
non-PC applications or other environments, such as medical, industrial, alarm systems,
test equipment, etc. may not be supported without further evaluation by Intel.
Document Organization
The chapters in this Product Guide are arranged as follows:
1 Desktop Board Features: a summary of product features
2 Installing and Replacing Desktop Board Components: instructions on how to install
the Desktop Board and other hardware components
3 Updating the BIOS: instructions on how to update the BIOS
4 Configuring Intel Smart Response Technology and RAID Using Intel RST
A Error Messages and Indicators: information about BIOS error messages and beep
codes
B Regulatory Compliance: describes the board’s adherence to safety standards and
EMC regulations and its product certifications
Conventions
The following conventions are used in this manual:
CAUTION
Cautions warn the user about how to prevent damage to hardware or loss of data.
NOTE
Notes call attention to important information.

Intel Desktop Board DZ68AF Product Guide
iv
Terminology
The table below gives descriptions of some common terms used in the product guide.
Term Description
GB Gigabyte (1,073,741,824 bytes)
GHz Gigahertz (one billion hertz)
KB Kilobyte (1024 bytes)
MB Megabyte (1,048,576 bytes)
Mb Megabit (1,048,576 bits)
MHz Megahertz (one million hertz)

v
Contents
1Desktop Board Features
Supported Operating Systems..............................................................................11
Desktop Board Components.................................................................................12
Processor..........................................................................................................14
Intel®Z68 Express Chipset..................................................................................15
Intel®RST.................................................................................................15
Intel®RRT..........................................................................................15
Intel®Smart Response Technology ........................................................15
Main Memory.....................................................................................................16
Graphics Support ...............................................................................................17
Audio Subsystem ...............................................................................................17
LAN Subsystem .................................................................................................18
USB Support .....................................................................................................19
SATA Support....................................................................................................19
Expandability.....................................................................................................19
Legacy I/O........................................................................................................20
BIOS................................................................................................................20
SATA Auto Configuration .............................................................................20
PCI*/PCI Express Auto Configuration.............................................................20
Security Passwords.....................................................................................21
Hardware Management .......................................................................................21
Hardware Monitoring and Fan Speed Control ..................................................21
Fan Monitoring ...........................................................................................21
Chassis Intrusion........................................................................................22
Power Management............................................................................................22
Software Support .......................................................................................22
ACPI..................................................................................................22
Hardware Support ......................................................................................22
Power Connectors ...............................................................................22
Fan Headers .......................................................................................23
LAN Wake Capabilities..........................................................................23
Instantly Available PC Technology..........................................................23
+5 V Standby Power Indicator LED ........................................................24
Wake from USB ..................................................................................25
PCI Express WAKE# Signal Wake-up Support..........................................25
Wake from CIR ...................................................................................25
Speaker............................................................................................................25
Real-Time Clock Subsystem.................................................................................25
2Installing and Replacing Desktop Board Components
Before You Begin ...............................................................................................27
Installation Precautions.......................................................................................28
Prevent Power Supply Overload ....................................................................28
Observe Safety and Regulatory Requirements.................................................28
Installing the I/O Shield ......................................................................................29
Installing and Removing the Desktop Board ...........................................................30

Intel Desktop Board DZ68AF Product Guide
vi
Installing and Removing a Processor.....................................................................31
Installing a Processor ..................................................................................31
Installing a Processor Fan Heat Sink..............................................................35
Connecting the Processor Fan Heat Sink Cable................................................35
Removing the Processor ..............................................................................35
Installing and Removing System Memory ..............................................................36
Guidelines for Dual Channel Memory Configuration..........................................36
Two or Four DIMMs .............................................................................36
Three DIMMs ......................................................................................37
Installing DIMMs ........................................................................................38
Removing DIMMs........................................................................................40
Installing and Removing PCI Express x16 Graphics Cards.........................................40
Installing a PCI Express x16 Graphics Card ....................................................40
Removing a PCI Express x16 Graphics Card....................................................42
Connecting SATA Drives......................................................................................43
Connecting to the Internal Headers ......................................................................44
Front Panel Audio Header ............................................................................45
IEEE 1394a Header.....................................................................................45
Chassis Intrusion Header .............................................................................46
Consumer IR (CIR) Headers .........................................................................46
Alternate Front Panel Power LED Header ........................................................47
Front Panel Header .....................................................................................47
Front Panel USB 2.0 Headers........................................................................48
S/PDIF Header ...........................................................................................48
Connecting to the Audio System...........................................................................49
Connecting Chassis Fan and Power Supply Cables...................................................50
Connecting a Chassis Fan ............................................................................50
Connecting Power Supply Cables ..................................................................51
Setting the BIOS Configuration Jumper .................................................................52
Clearing Passwords ............................................................................................53
Replacing the Battery .........................................................................................54
3Updating the BIOS
Updating the BIOS with the Intel®Express BIOS Update Utility.................................61
Updating the BIOS Using the F7 Function Key ........................................................62
Updating the BIOS with the ISO Image BIOS Update File or the Intel®Flash
Memory Update Utility...................................................................................63
Obtaining the BIOS Update File ....................................................................63
Updating the BIOS with the Intel Flash Memory Update Utility...........................63
Updating the BIOS with the ISO Image BIOS Update File .................................64
Recovering the BIOS...................................................................................65
4Configuring Intel®Smart Response Technology and RAID
Using Intel®RST
Configuring Intel Smart Response Technology........................................................67
Configuring RAID ...............................................................................................68
Configuring the BIOS ..................................................................................68
Creating Your RAID Set ...............................................................................68
Loading the Intel RST RAID Drivers and Software (Required for
Microsoft Windows XP Installation) ..........................................................69
Setting Up a “RAID Ready” System ...............................................................69

Contents
vii
AError Messages and Indicators
BIOS Error Codes...............................................................................................71
BIOS Error Messages..........................................................................................72
BRegulatory Compliance
Safety Standards ...............................................................................................73
Battery Caution ..........................................................................................73
European Union Declaration of Conformity Statement..............................................74
Product Ecology Statements ................................................................................75
Recycling Considerations .............................................................................75
China RoHS ...............................................................................................78
EMC Regulations ................................................................................................79
FCC Declaration of Conformity......................................................................79
Canadian Department of Communications Compliance Statement......................80
Japan VCCI Statement ................................................................................80
Korea Class B Statement .............................................................................81
Ensure Electromagnetic Compatibility (EMC) Compliance..................................81
Product Certifications..........................................................................................82
Board-Level Certifications ............................................................................82
Chassis- and Component-Level Certifications..................................................83
ENERGY STAR*, e-Standby, and ErP Compliance ....................................................83
Figures
1. Intel Desktop Board DZ68AF Components........................................................12
2. LAN Connector LEDs .....................................................................................18
3. Location of the Standby Power Indicator ..........................................................24
4. Installing the I/O Shield ................................................................................29
5. Intel Desktop Board DZ68AF Mounting Screw Hole Locations ..............................30
6. Unlatch the Socket Lever...............................................................................31
7. Lift the Load Plate.........................................................................................32
8. Remove the Processor from the Protective Cover ..............................................33
9. Install the Processor .....................................................................................33
10. Secure the Load Plate in Place........................................................................34
11. Connecting the Processor Fan Heat Sink Power Cable to the Processor
Fan Header..................................................................................................35
12. Example Dual Channel Memory Configuration with Two DIMMs ...........................36
13. Example Dual Channel Memory Configuration with Four DIMMs...........................36
14. Example Dual Channel Memory Configuration with Three DIMMs .........................37
15. Use DDR3 DIMMs .........................................................................................38
16. Installing a DIMM .........................................................................................39
17. Installing a PCI Express x16 Graphics Card ......................................................41
18. Removing a PCI Express x16 Graphics Card......................................................42
19. Connecting a SATA Drive ...............................................................................43
20. Internal Headers ..........................................................................................44
21. Back Panel Audio Connectors .........................................................................49
22. Location of the Chassis Fan Header .................................................................50
23. Connecting Power Supply Cables ....................................................................51
24. Location of the BIOS Configuration Jumper Block ..............................................52
25. Removing the Battery ...................................................................................59
26. Intel Desktop Board DZ68AF China RoHS Material Self Declaration Table ..............78

Intel Desktop Board DZ68AF Product Guide
viii
Tables
1. Feature Summary.......................................................................................... 9
2. Intel Desktop Board DZ68AF Components........................................................13
3. Audio Jack Retasking Support.........................................................................18
4. LAN Connector LEDs .....................................................................................19
5. Front Panel Audio Signal Names for Intel HD Audio............................................45
6. Front Panel Audio Header Signal Names for AC ’97 Audio ...................................45
7. IEEE 1394a Header Signal Names ...................................................................45
8. Chassis Intrusion Header Signal Names ...........................................................46
9. Front Panel CIR Receiver (Input) Header Signal Names......................................46
10. Back Panel CIR Emitter (Output) Header Signal Names ......................................47
11. Alternate Front Panel Power LED Header Signal Names ......................................47
12. Front Panel Header Signal Names ...................................................................47
13. USB 2.0 Header Signal Names........................................................................48
14. S/PDIF Header Signal Names .........................................................................48
15. Jumper Settings for the BIOS Setup Program Modes..........................................53
16. BIOS Beep Codes .........................................................................................71
17. Front-panel Power LED Blink Codes .................................................................72
18. BIOS Error Messages ....................................................................................72
19. Safety Standards..........................................................................................73
20. EMC Regulations...........................................................................................79
21. Regulatory Compliance Marks.........................................................................82

9
1 Desktop Board Features
This chapter briefly describes the features of Intel®Desktop Board DZ68AF. Table 1
summarizes the major features of the Desktop Board.
Table 1. Feature Summary
Form Factor microATX (243.84 millimeters [9.6 inches] x 243.84 millimeters
[9.6 inches])
Processor Intel®Core™ i7, Intel®Core™ i5, and Intel®Core™ i3 processors, in
the LGA1155 package, with integrated memory controller
Chipset Intel®Z68 Express Chipset consisting of the Intel Z68 Platform
Controller Hub (PCH) with support for:
•Intel®Rapid Storage Technology (Intel®RST)
•Intel®Smart Response Technology
•Intel®Rapid Recover Technology (Intel®RRT)
Memory •Four 240-pin DDR3 SDRAM Dual Inline Memory Module (DIMM)
sockets
•Dual Channel DDR3 1333 MHz and DDR3 1066 MHz support
•Support for 1 Gb, 2 Gb, and 4 Gb memory technology
•Support for up to 32 GB of system memory with four DIMMs using
4 Gb memory technology
•Support for non-ECC memory
•Support for 1.35 V low voltage JEDEC memory
Graphics Discrete graphics support for a PCI Express* 2.0 x16 add-in graphics
card
Audio •10-channel (7.1+2) Intel®High Definition Audio (Intel®HD Audio)
using a Realtek* ALC892 audio codec including:
―Front panel audio header with support for Intel HD Audio and
AC ’97 Audio
―Five analog audio jacks on the back panel
―Onboard S/PDIF out header and back panel optical S/PDIF out
connector
Expansion
Capabilities
•One PCI Express 2.0 x16 add-in card connector
•Two PCI Express 2.0 x1 add-in card connectors
•One PCI Conventional bus add-in card connector
continued

Intel Desktop Board DZ68AF Product Guide
10
Table 1. Feature Summary (continued)
Peripheral
Interfaces
USB Support:
•Two USB 3.0 ports implemented with stacked back panel
connectors
•Fourteen USB 2.0 ports:
―Six ports implemented with stacked back panel connectors
―Eight front panel ports implemented with four dual-port
internal headers
Serial ATA Support:
•Two Serial ATA (SATA) 6.0 Gb/s ports
•Two Serial ATA (SATA) 3.0 Gb/s ports
•Two external SATA (eSATA) 3.0 Gb/s ports (one on the board and
one on the back panel)
RAID Intel®Rapid Storage Technology (Intel®RST) version 10.6
Legacy I/O Support Legacy I/O Controller (Nuvoton* W83677HG-I) that provides
Consumer Infrared (CIR) support
LAN Support Intel®82579V Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
including an RJ-45 back panel connector with integrated status LEDs
BIOS •Intel®BIOS resident in an Serial Peripheral Interface (SPI) Flash
device
•Support for Advanced Configuration and Power Interface (ACPI),
Plug and Play, and System Management BIOS (SMBIOS)
•BIOS support for Hyper Boot
•Unified Extensible Firmware Interface (UEFI) to support hard disk
drives larger than 2 TB
Instantly Available
PC Technology
•Support for PCI Local Bus Specification Revision 2.3
•Support for PCI Express Base Specification Revision 2.0
•Suspend to RAM support
•Wake on PCI Express, LAN, front panel, CIR, and USB ports
Hardware
Management
Nuvoton W83677HG-I based subsystem, including:
•Voltage sense to detect out of range power supply voltages
•Thermal sense to detect out of range thermal values
•Three fan headers using Pulse Width Modulation (PWM) control
•4-pin headers for processor and chassis fans
•4-wire and 3-wire (linear) fan speed control support for the
chassis fans
•Support for Platform Environmental Control Interface (PECI)

Desktop Board Features
11
Supported Operating Systems
The Desktop Board provides full support for the following operating systems:
•Microsoft Windows* 7 Ultimate 64-bit edition
•Microsoft Windows 7 Ultimate 32-bit edition
•Microsoft Windows 7 Home Basic 64-bit edition
•Microsoft Windows 7 Home Premium 64-bit edition
•Microsoft Windows 7 Home Premium 32-bit edition
•Microsoft Windows 7 Home Basic 32-bit edition
•Microsoft Windows Vista* Ultimate 32-bit edition
•Microsoft Windows Vista Business 32-bit edition
•Microsoft Windows Vista Home Premium 32-bit edition
•Microsoft Windows Vista Home Basic 32-bit edition
•Microsoft Windows Vista Ultimate 64-bit edition
•Microsoft Windows Vista Business 64-bit edition
•Microsoft Windows Vista Home Premium 64-bit edition
•Microsoft Windows Vista Home Basic 64-bit edition
The Desktop Board provides minimal BIOS and driver support for the following
operating systems:
•Microsoft Windows* XP Media Center Edition 2005
•Microsoft Windows XP Professional
•Microsoft Windows XP Professional x64 Edition
•Microsoft Windows XP Home

Intel Desktop Board DZ68AF Product Guide
12
Desktop Board Components
Figure 1 shows the approximate location of the major components on Intel Desktop
Board DZ68AF.
Figure 1. Intel Desktop Board DZ68AF Components

Desktop Board Features
13
Table 2. Intel Desktop Board DZ68AF Components
Label Description
A PCI Conventional bus connector
B PCI Express 2.0 x1 add-in card connector
C IEEE 1394a header
D PCI Express 2.0 x1 add-in card connector
E PCI Express 2.0 x16 add-in card connector
F Back panel connectors
G 12 V processor core voltage connector (2 x 2 pin)
H Rear chassis fan header
I Processor socket
J Processor fan header
K DDR3 DIMM 3 socket
L DDR3 DIMM 1 socket
M DDR3 DIMM 4 socket
N DDR3 DIMM 2 socket
O Front chassis fan header
P Chassis intrusion header
Q Front panel CIR receiver (input) header
R Back panel CIR emitter (output) header
S Main power connector (2 x 12 pin)
T Battery
U Speaker
V SATA connectors
W Front panel header
X Alternate front panel power LED header
Y BIOS configuration jumper block
Z Front panel USB 2.0 headers
AA Standby power indicator LED
BB S/PDIF header
CC Front panel audio header

Intel Desktop Board DZ68AF Product Guide
14
Online Support
For more information on Intel Desktop Board DZ68AF consult the following online
resources:
•Intel Desktop Board DZ68AF http://www.intel.com/products/motherboard/index.ht
m
•Desktop Board Support http://www.intel.com/p/en_US/support?iid=hdr+supp
ort
•Available configurations for Intel
Desktop Board DZ68AF
http://ark.intel.com
•Supported processors http://processormatch.intel.com
•Chipset information http://www.intel.com/products/desktop/chipsets/inde
x.htm
•BIOS and driver updates http://downloadcenter.intel.com/
•Integration information http://www.intel.com/support/go/buildit
Processor
CAUTION
Failure to use an appropriate power supply and/or not connecting the 12 V (2 x 2 pin)
power connector to the Desktop Board may result in damage to the board, or the
system may not function properly.
Intel Desktop Board DZ68AF supports the Intel Core i7, Intel Core i5, Intel Core i3,
and Intel Pentium processors in an LGA1155 socket. Processors are not included with
the Desktop Board and must be purchased separately. The processor connects to the
Desktop Board through the LGA1155 socket.
For information on supported processors for Intel Desktop Board DZ68AF, go to
http://processormatch.intel.com.

Desktop Board Features
15
Intel®Z68 Express Chipset
The Intel Z68 Express Chipset consists of the Intel Z68 Platform Controller Hub (PCH).
The PCH is the centralized controller for the board’s I/O paths.
The Intel Z68 PCH provides Intel RST support including Intel RRT and Intel Smart
Response Technology.
Intel®RST
The Intel RST software package provides high-performance SATA and SATA RAID
capabilities for supported operating systems. Intel RST version 10.6 enables Intel
Smart Response Technology, the full SATA interface speed up to 6 Gb/s, and Intel RRT
to support next-generation Solid State Drives (SSDs) or traditional Hard Disk Drives
(HDDs). Intel RST version 10.6 also includes support for larger than 2.2 TB HDDs in a
RAID configuration.
Intel®RRT
Intel RRT uses RAID 1 (mirroring) functionality to copy data from a designated master
drive to a designated recovery drive. The master drive data can be copied to the
recovery drive either continuously or on request:
•Continuous: Changes made to data on the master drive while the system is not
docked are automatically copied to the recovery drive when the system is re-
docked.
•On request: The master drive data is restored to a previous state by copying the
data on the recovery drive back to the master drive.
Intel®Smart Response Technology
Intel Smart Response Technology supports a single drive volume that combines the
high-performance benefits of SSDs with the large storage capacities of traditional
HDDs to dramatically increase system responsiveness and enable faster boot times.
The two technologies (SSD and HDD) appear as a single C:\ drive letter that provides
you with the familiar storage identifier.
The system automatically learns which files you access frequently and then copies
them from the HDD to the SSD. The next time you request these files, the system
loads them from the fast SSD rather than the slower HDD. For infrequently-used files,
the system loads them from the HDD when you need them.

Intel Desktop Board DZ68AF Product Guide
16
NOTE
The SATA Drive Mode must be set to RAID in the BIOS Setup in order for your
system to use Intel Smart Response Technology. Once RAID is enabled, you can
install the operating system and the Intel Rapid Storage Technology driver. If
the operating system was already installed with the SATA Drive Mode set to
AHCI, you must reinstall the operating system with the SATA Drive Mode set to
RAID. Refer to Section 4, “Configuring Intel Smart Response Technology and
RAID Using Intel®RST”, on page 67 for more information.
For more information on Intel Smart Response Technology refer to
http://download.intel.com/design/flash/nand/325554.pdf or download the Intel Smart
Response Technology User Guide at
http://www.intel.com/support/motherboards/desktop/dz68db/sb/CS-
032499.htm?wapkw=(smart+response)
Main Memory
NOTE
To be fully compliant with all applicable Intel
®SDRAM memory specifications, the
board should be populated with DIMMs that support the Serial Presence Detect (SPD)
data structure. If your memory modules do not support SPD, you will see a
notification to this effect on the screen at power up. The BIOS will attempt to
configure the memory controller for normal operation.
The board has four DDR3 DIMM sockets arranged in two channels and supports the
following memory features:
•Two independent memory channels with interleaved mode support
•Support for non-ECC, unbuffered, single-sided or double-sided DIMMs with x8
organization and single-sided DIMMs with x16 organization
•32 GB maximum total system memory (with 4 Gb memory technology)
•Minimum total system memory: 512 MB
•Serial Presence Detect
•DDR3 1333 MHz and DDR3 1066 MHz SDRAM DIMMs
NOTE
32-bit operating systems are limited to a maximum of 4 GB of memory. These
operating systems will report less than 4 GB because of the memory used by
add-in graphics cards and other system resources.

Desktop Board Features
17
Graphics Support
The board supports system graphics through a PCI Express 2.0 x16 add-in graphics
card.
The Intel Core i7, Intel Core i5, Intel Core i3, and Intel Pentium processors in an
LGA1155 socket support discrete add-in graphics cards via the PCI Express 2.0 x16
add-in card connector. The board supports the following PCI Express speeds:
•PCI Express 2 frequency of 2.5 GHz which results in 5.0 Gb/s in each direction
(500 MB/s) per lane. The maximum theoretical bandwidth on the interface is
8 GB/s in each direction, simultaneously, when operating in x16 mode.
•PCI Express 1.1 frequency of 1.25 GHz resulting in 2.5 Gb/s each direction
(250 MB/s) per lane. The maximum theoretical bandwidth on the interface is
4 GB/s in each direction, simultaneously, when operating in x16 mode.
Audio Subsystem
The board supports Intel High Definition Audio through a Realtek ALC892 audio codec.
The Realtek ALC892-based audio subsystem provides the following features:
•Advanced jack sense for the back panel audio connectors that enables the audio
codec to recognize the device that is connected to an audio port
•Stereo input and output via back panel connectors
•Headphone and Mic in functions for front panel audio connectors
•97 dB Signal-to-Noise ratio (SNR) playback (DAC) quality and 90 dB SNR recording
(ADC) quality
•Content protection for full-rate loss-less DVD Audio and Blu-ray Disc* audio
content playback (with selected versions of media player software)
The audio subsystem supports the following audio interfaces:
•7.1 analog back panel audio connectors
•Optical S/PDIF-out back panel audio connector
•S/PDIF-out header with support for optical or coaxial S/PDIF output
•Front panel audio header with support for Intel HD Audio and AC ’97 Audio

Intel Desktop Board DZ68AF Product Guide
18
Table 3 lists the supported functions of the front panel (FP) and back panel (BP) audio
jacks.
Table 3. Audio Jack Retasking Support
Audio
Jack
Micro-
phone
Head-
phones
Front
Speakers
Line In
Micro-
phone/
Side
Surround
Rear
Surround
Center/
Subwoofer
FP Green Default
FP Pink Default
BP Blue Default
BP Green Control
panel
Default
BP Pink Default
BP Black Default
BPOrange Default
LAN Subsystem
The LAN subsystem includes:
•Intel 82579V Gigabit (10/100/1000 Mb/s) Ethernet LAN controller
•RJ-45 LAN connector with integrated status LEDs
LAN software and drivers are available at http://downloadcenter.intel.com/.
Two LEDs are built into the RJ-45 LAN connector located on the back panel (see
Figure 2). These LEDs indicate the status of the LAN as shown in Table 4.
Figure 2. LAN Connector LEDs

Desktop Board Features
19
Table 4. LAN Connector LEDs
LED LED Color LED State Indicates
A (Link/Activity) Off LAN link is not established
Green
On LAN link is established
Blinking LAN activity is occurring
N/A Off 10 Mb/s data rate
Green On 100 Mb/s data rate
B (Link Speed)
Yellow On 1000 Mb/s data rate
USB Support
The Desktop Board supports USB 3.0 and USB 2.0. USB 3.0 is supported via two
USB 3.0 ports (blue) on the back panel. USB 3.0 ports are backward compatible with
USB 2.0 and USB 1.1 devices. The USB 3.0 ports are SuperSpeed, high-speed, full-
speed, and low-speed capable. USB 3.0 support requires both an operating system
and drivers that fully support USB 3.0 transfer rates.
There are 14 USB 2.0 ports (six ports routed to back panel connectors (black) and
eight ports routed to four onboard headers). The USB 2.0 ports are high-speed, full-
speed, and low-speed capable. USB 2.0 support requires both an operating system
and drivers that fully support USB 2.0 transfer rates.
SATA Support
Intel Desktop Board DZ68AF provides two onboard 6.0 Gb/s Serial ATA (SATA)
channels and two onboard 3.0 Gb/s SATA channels.
The board also provides two 3.0 Gb/s external SATA (eSATA) channels (one via an
onboard connector and the other via a back panel connector).
Expandability
Intel Desktop Board DZ68AF provides the following connectors for system expansion:
•One PCI Express 2.0 x16 connector
•Two PCI Express 2.0 x1 connectors
•One PCI Conventional bus connector

Intel Desktop Board DZ68AF Product Guide
20
Legacy I/O
The board’s Legacy I/O Controller provides the following legacy features:
•Low pin count (LPC) interface
•Consumer Infrared (CIR) support
•Serial IRQ interface compatible with serialized IRQ support for PCI Conventional
bus systems
•Intelligent power management, including a programmable wake-up event interface
The BIOS Setup program provides configuration options for the Legacy I/O controller.
BIOS
The BIOS provides the Power-On Self-Test (POST), the BIOS Setup program, and the
PCI Express and SATA auto-configuration utilities. The BIOS is stored in the Serial
Peripheral Interface (SPI) Flash device.
The BIOS can be updated by following the instructions in Chapter 3 starting on
page 61.
SATA Auto Configuration
If you install a SATA device (such as a hard drive) in your computer, the auto-
configuration utility in the BIOS automatically detects and configures the device for
your computer. You do not need to run the BIOS Setup program after installing a
SATA device. You can override the auto-configuration options by specifying manual
configuration in the BIOS Setup program.
The BIOS sets SATA to ACHI mode by default.
PCI*/PCI Express Auto Configuration
If you install a PCI Express add-in card in your computer, the PCI Express auto-
configuration utility in the BIOS automatically detects and configures the resources
(IRQs, DMA channels, and I/O space) for that add-in card. You do not need to run the
BIOS Setup program after you install a PCI Express add-in card.