Asus B85M-K User Manual

B85M-K

Motherboard

E8698
First Edition

October 2013

Copyright © 2013 ASUSTeK COMPUTER INC. All Rights Reserved.

No part of this manual, including the products and software described in it, may be reproduced,
transmitted, transcribed, stored in a retrieval system, or translated into any language in any form or by any
means, except documentation kept by the purchaser for backup purposes, without the express written
permission of ASUSTeK COMPUTER INC. (“ASUS”).

Product warranty or service will not be extended if: (1) the product is repaired, modied or altered, unless
such repair, modication of alteration is authorized in writing by ASUS; or (2) the serial number of the

product is defaced or missing.
ASUS PROVIDES THIS MANUAL “AS IS” WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS

OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL ASUS, ITS
DIRECTORS, OFFICERS, EMPLOYEES OR AGENTS BE LIABLE FOR ANY INDIRECT, SPECIAL,
INCIDENTAL, OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF PROFITS,
LOSS OF BUSINESS, LOSS OF USE OR DATA, INTERRUPTION OF BUSINESS AND THE LIKE),
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DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR
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Offer to Provide Source Code of Certain Software

This product contains copyrighted software that is licensed under the General Public License (“GPL”),
under the Lesser General Public License Version (“LGPL”) and/or other Free Open Source Software
Licenses. Such software in this product is distributed without any warranty to the extent permitted by the
applicable law. Copies of these licenses are included in this product.

Where the applicable license entitles you to the source code of such software and/or other additional data,
you may obtain it for a period of three years after our last shipment of the product, either

(1) for free by downloading it from http://support.asus.com/download
or
(2) for the cost of reproduction and shipment, which is dependent on the preferred carrier and the location

where you want to have it shipped to, by sending a request to:

ASUSTeK Computer Inc.
Legal Compliance Dept.
15 Li Te Rd.,
Beitou, Taipei 112
Taiwan

In your request please provide the name, model number and version, as stated in the About Box of the
product for which you wish to obtain the corresponding source code and your contact details so that we
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The source code will be distributed WITHOUT ANY WARRANTY and licensed under the same license as
the corresponding binary/object code.

This offer is valid to anyone in receipt of this information.
ASUSTeK is eager to duly provide complete source code as required under various Free Open Source

Software licenses. If however you encounter any problems in obtaining the full corresponding source
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the product and describing the problem (please DO NOT send large attachments such as source code
archives, etc. to this email address).

ii

Contents

Safety information ...................................................................................................... iv

About this guide ......................................................................................................... iv

Package contents ....................................................................................................... vi

B85M-K specications summary .............................................................................. vi

Product introduction

1.1 Before you proceed ...................................................................................... 1-1

1.2 Motherboard overview .................................................................................

1.3 Central Processing Unit (CPU) ....................................................................

1.4 System memory ............................................................................................

1.5 Expansion slots ............................................................................................

1.6 Jumpers

1.7 Connectors ..................................................................................................

1.8 Onboard LEDs ............................................................................................

1.9 Software support ........................................................................................

BIOS information

2.1 Managing and updating your BIOS .............................................................2-1

2.2 BIOS setup program .....................................................................................

2.3 Main menu .....................................................................................................

2.4 Ai Tweaker menu ........................................................................................

2.5 Advanced menu ..........................................................................................

2.6 Monitor menu ..............................................................................................

2.7 Boot menu ...................................................................................................

2.8 Tools menu ..................................................................................................

2.9 Exit menu ....................................................................................................

....................................................................................................... 1-11

1-13

1-20

1-21

2-10

2-11

2-12

2-13

2-14

2-14

1-1

1-4

1-7

1-9

2-5

2-9

Appendices

Notices ..................................................................................................................... A-1

ASUS contact information ...................................................................................... A-3

iii

Safety information

Electrical safety

To prevent electrical shock hazard, disconnect the power cable from the electrical outlet

•
before relocating the system.

When adding or removing devices to or from the system, ensure that the power cables

•
for the devices are unplugged before the signal cables are connected. If possible,
disconnect all power cables from the existing system before you add a device.

Before connecting or removing signal cables from the motherboard, ensure that all

•
power cables are unplugged.

Seek professional assistance before using an adapter or extension cord. These devices

•
could interrupt the grounding circuit.

Ensure that your power supply is set to the correct voltage in your area. If you are not

•
sure about the voltage of the electrical outlet you are using, contact your local power
company.

If the power supply is broken, do not try to x it by yourself. Contact a qualied service

•
technician or your retailer.

Operation safety

Before installing the motherboard and adding devices on it, carefully read all the manuals

•
that came with the package.

Before using the product, ensure all cables are correctly connected and the power

•
cables are not damaged. If you detect any damage, contact your dealer immediately.

To avoid short circuits, keep paper clips, screws, and staples away from connectors,

•
slots, sockets and circuitry.

Avoid dust, humidity, and temperature extremes. Do not place the product in any area

•
where it may become wet.

Place the product on a stable surface.

•

If you encounter technical problems with the product, contact a qualied service

•
technician or your retailer.

About this guide

This user guide contains the information you need when installing and conguring the

motherboard.

How this guide is organized

This guide contains the following parts:

• Chapter 1: Product introduction

This chapter describes the features of the motherboard and the new technology it
supports.

• Chapter 2: BIOS information

This chapter tells how to change system settings through the BIOS Setup menus.
Detailed descriptions of the BIOS parameters are also provided.

iv

Where to nd more information

Refer to the following sources for additional information and for product and software
updates.

1. ASUS websites

The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS contact information.

2. Optional documentation

Your product package may include optional documentation, such as warranty yers,

that may have been added by your dealer. These documents are not part of the
standard package.

Conventions used in this guide

To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.

DANGER/WARNING: Information to prevent injury to yourself when trying to
complete a task.

CAUTION: Information to prevent damage to the components when trying to
complete a task

IMPORTANT: Instructions that you MUST follow to complete a task. .

NOTE: Tips and additional information to help you complete a task.

Typography

Bold text Indicates a menu or an item to select.

Italics

<Key> Keys enclosed in the less-than and greater-than sign

<Key1> + <Key2> + <Key3> If you must press two or more keys simultaneously, the key

Used to emphasize a word or a phrase.

means that you must press the enclosed key.

Example: <Enter> means that you must press the Enter or
Return key.

names are linked with a plus sign (+).

v

Package contents

Check your motherboard package for the following items.

Motherboard ASUS B85M-K motherboard

Cables 2 x Serial ATA 6.0 Gb/s cables

Accessories 1 x I/O Shield

Application DVD Support DVD

Documentation User Guide

If any of the above items is damaged or missing, contact your retailer.

B85M-K specications summary

CPU LGA1150 socket for Intel® 4th Generation CoreTM i7/ i5 / i3, Pentium® and

Chipset Intel® B85 Express Chipset

Memory 2 x DIMMs, max. 16GB DDR3 1600/1333/1066MHz, non-ECC, unbuffered

Graphics Integrated Graphics Processor - Intel® HD Graphics support

Expansion slots 1 x PCI Express 3.0/2.0 x16 slot (at x16 mode, yellow)

LAN

Audio Realtek® ALC887 8-Channel High Denition Audio CODEC

Storage

Celeron® Processors

Supports 22nm CPU

Supports Intel® Turbo Boost Technology 2.0*

®

* Intel

Turbo Boost Technology 2.0 support depends on the CPU types.

** Refer to www.asus.com for Intel

®

CPU support list.

memory modules

Dual-channel memory architecture

Supports Intel® Extreme Memory Prole (XMP)

* Hyper DIMM support is subject to the physical characteristics of individual

CPUs. Please refer to Memory QVL for details.

** Refer to

www.asus.com for the latest Memory QVL (Qualied Vendors List).

*** Due to Intel® chipset limitations, DDR3 1600MHz and higher memory modules

on XMP mode will run at the maximum transfer rate of DDR3 1600MHz.

Multi-VGA output support: DVI-D, RGB port

- Supports DVI-D with max. resolution up to 1920 x1200@60Hz

- Supports RGB with max. resolution 1920x1200@60Hz

- Maximum shared memory of 1024MB

2 x PCI Express 2.0 x1 slots

Realtek® RTL8111G Gigabit LAN Controller

- Supports Jack-Detection and Front Panel Jack-Retasking

* Use a chassis with HD audio module in the front panel to support an

8-channel audio output

Intel® B85 Express Chipset:

- 4 x Serial ATA 6.0 Gb/s connectors (yellow)

- 2 x Serial ATA 3.0 Gb/s connectors (dark brown)

- Supports Intel
Technology*

* These functions will work depending on the CPU installed.

®

Rapid Start Technology* and Intel® Smart Connect

(continued on the next page)

vi

B85M-K specications summary

USB

ASUS unique
features

Back Panel I/O
ports

Internal
I/O connectors/
buttons/switches

Intel® B85 Express Chipset

- 4 x USB 3.0/2.0 ports (2 ports at mid-board, 2 ports at the rear panel)

- 6 x USB 2.0/1.1 ports (4 ports at mid-board, 2 ports at the rear panel)

* Supports ASUS USB 3.0 Boost

ASUS Exclusive Features:

- ASUS EPU

- ASUS UEFI BIOS EZ Mode featuring a friendly graphical user interface

- ASUS USB 3.0 Boost

- ASUS AI Charger

- ASUS GPU Boost

- ASUS Network iControl

- ASUS AI Suite 3

- ASUS Anti-surge Protection

- ASUS ESD

ASUS Quiet Thermal Solution

- ASUS Fanless Design: Stylish Heatsink solution

- ASUS Fan Xpert

ASUS Q-Design

- ASUS Q-Slot

ASUS EZ DIY:

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 2

1 x PS/2 keyboard port (purple)

1 x PS/2 mouse port (green)

2 x USB 3.0/2.0 ports

2 x USB 2.0/1.1 ports

1 x DVI port

1 x D-Sub port

1 x LAN (RJ-45) port

3 x Audio jacks support 8-channel audio output

2 x USB 2.0/1.1 connectors support additional 4 USB 2.0/1.1 ports

1 x USB 3.0/2.0 connectors support additional 2 USB 3.0/2.0 ports

4 x SATA 6.0Gb/s connectors

2 x SATA 3.0Gb/s connectors

1 x CPU fan connector

1 x Chassis fan connector

1 x Front panel audio connector

1 x S/PDIF Out connector

1 x 24-pin EATX power connector

1 x 4-pin EATX 12V power connector

1 x Speaker connector

1 x System panel connector

1 x CLRTC jumper

(continued on the next page)

vii

B85M-K specications summary

BIOS features 64 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI2.0, WfM 2.0, SM BIOS 2.7,

Manageability WfM 2.0, DMI 2.0, WOL by PME, PXE

Support DVD Drivers

Operating System
Support

Form factor

Specications are subject to change without notice.

ACPI 2.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree

BIOS 3, My Favorites, Quick Note, Last Modied Log, F12 PrintScreen, F3

Shortcut functions and ASUS DRAM SPD (Serial Presence Detect) memory
information

ASUS utilities

EZ Update

Anti-virus software (OEM version)

Windows® 8.1

Windows® 8

Windows® 7

uATX form factor: 8.9 in x 6.9 in (22.6 cm x 17.5 cm)

viii

Product introduction

1

1.1 Before you proceed

Take note of the following precautions before you install motherboard components or change
any motherboard settings.

• Unplug the power cord from the wall socket before touching any component.

• Before handling components, use a grounded wrist strap or touch a safely grounded
object or a metal object, such as the power supply case, to avoid damaging them due
to static electricity.

• Hold components by the edges to avoid touching the ICs on them.

• Whenever you uninstall any component, place it on a grounded antistatic pad or in the
bag that came with the component.

• Before you install or remove any component, ensure that the ATX power supply 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, or components.

1.2 Motherboard overview

Before you install the motherboard, study the conguration of your chassis to ensure that the
motherboard ts into it.

Ensure that you unplug the power cord before installing or removing the motherboard.
Failure to do so can cause you physical injury and damage motherboard components.

1.2.1 Placement direction

When installing the motherboard, ensure that you place it into the chassis in the correct
orientation. The edge with external ports goes to the rear part of the chassis as indicated in
the image below.

ASUS B85M-K

1-1

B85M-K

1.2.2 Screw holes

Place six screws into the holes indicated by circles to secure the motherboard to the chassis.

Do not overtighten the screws! Doing so can damage the motherboard.

Place this side towards

the rear of the chassis

1-2

Chapter 1: Product introduction

1.2.3 Motherboard layout

B85M-K

PCIEX16

PCIEX1_1

PCIEX1_2

SPEAKER

F_PANEL

CLRTC

SPDIF_OUT

PS2_USBPW1-4

USBPW5-10

USB56

USB78

AAFP

ATX12V

EATXPWR

CPU_FAN

CHA_FAN

BATTERY

Super

I/O

ALC

887- VD2

RTL

8111G

ASP
1255

64Mb
BIOS

LGA1150

Intel

®

B85

DDR3 DIMM_A1 (64bit, 240-pin module)

DDR3 DIMM_B1 (64bit, 240-pin module)

SATA6G_1 SATA6G_2

SATA6G_4SATA6G_3

SATA3G_1 SATA3G_2

AUDIO

KBMS

LAN_USB34

USB3_12

DVIVGA

SB_PWR

USB3_910

17.5cm(6.9in)

2 41 533

22.6cm(8.9in)

2

6

7

8

8

11 10 91214 131516

ASUS B85M-K

1-3

B85M-K

B85M-K CPU socket LGA1150

1.2.4 Layout contents

Connectors/Jumpers/Slots/LED Page

1. Keyboard and USB device wakeup (3-pin PS2_USBPW1~4) 1-12

2. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-17

3. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN) 1-16

4. Intel® LGA1150 CPU socket 1-4

5. DDR3 DIMM slots 1-7

6. Speaker connector (4-pin SPEAKER) 1-17

7. System panel connector (10-1 pin F_PANEL) 1-19

8. Intel® B85 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~4 [yellow]) 1-18

9. Intel® B85 Serial ATA 3.0Gb/s connector (7-pin SATA3G_1~2 [dark brown]) 1-18

10. USB 3.0 connector (20-1 pin USB3_910) 1-19

11. USB 2.0 connectors (10-1 pin USB78, USB56) 1-16

12. USB device wake-up (3-pin USBPW5~10) 1-12

13. Clear RTC RAM (3-pin CLRTC) 1-11

14. Digital audio connector (4-1 pin SPDIF_OUT) 1-15

15. Front panel audio connector (10-1 pin AAFP) 1-15

16. Onboard LED (SB_PWR) 1-20

1.3 Central Processing Unit (CPU)

This motherboard comes with a surface mount LGA1150 socket designed for the Intel® 4th
generation Core™ i7 / Core™ i5 / Core™ i3, Pentium® and Celeron® processors.

1-4

Unplug all power cables before installing the CPU.

• Upon purchase of the motherboard, ensure that the PnP cap is on the socket and
the socket contacts are not bent. Contact your retailer immediately if the PnP cap
is missing, or if you see any damage to the PnP cap/socket contacts/motherboard
components. ASUS will shoulder the cost of repair only if the damage is shipment/
transit-related.

• Keep the cap after installing the motherboard. ASUS will process Return Merchandise

Authorization (RMA) requests only if the motherboard comes with the cap on the

LGA1150 socket.

• The product warranty does not cover damage to the socket contacts resulting from
incorrect CPU installation/removal, or misplacement/loss/incorrect removal of the PnP
cap.

Chapter 1: Product introduction

1.3.1 Installing the CPU

A

B

A

B

C

1

2

4

3

5

ASUS B85M-K

1-5

1.3.2 CPU heatsink and fan assembly installation

Apply the Thermal Interface Material
to the CPU heatsink and CPU
before you install the heatsink and
fan if necessary.

To install the CPU heatsink and fan assembly

1

B

A

B

A

3 4

2

1-6

Chapter 1: Product introduction

B85M-K

B85M-K 240-pin DDR3 DIMM sockets

DIMM_A1

DIMM_B1

To uninstall the CPU heatsink and fan assembly

1

2

B

A

B

A

1.4 System memory

1.4.1 Overview

This motherboard comes with two Double Data Rate 3 (DDR3) Dual Inline Memory Module
(DIMM) sockets. A DDR3 module is notched differently from a DDR or DDR2 module. DO
NOT install a DDR or DDR2 memory module to the DDR3 slot.

According to Intel® CPU spec, DIMM voltage below 1.65V is recommended to protect the
CPU.

1.4.2 Memory congurations

You may install 1GB, 2GB, 4GB, and 8GB unbuffered non-ECC DDR3 DIMMs into the DIMM
sockets.

ASUS B85M-K

Channel Sockets

Channel A DIMM_A1

Channel B DIMM_B1

1-7

• You may install varying memory sizes in Channel A and Channel B. The system maps
the total size of the lower-sized channel for the dual-channel conguration. Any excess
memory from the higher-sized channel is then mapped for single-channel operation.

• Due to Intel

®

chipset limitations, DDR3 1600MHz and higher memory modules on

XMP mode will run at the maximum transfer rate of DDR3 1600MHz.

• Always install DIMMs with the same CAS latency. For optimal compatibility, we
recommend that you install memory modules of the same version or date code (D/C)
from the same vendor. Check with the retailer to get the correct memory modules.

• Due to the memory address limitation on 32-bit Windows

®

OS, when you install 4GB
or more memory on the motherboard, the actual usable memory for the OS can be
about 3GB or less. For effective use of memory, we recommend that you do any of the
following:

- Use a maximum of 3GB system memory if you are using a 32-bit Windows

- Install a 64-bit Windows

®

OS if you want to install 4GB or more on the

®

OS.

motherboard.

• This motherboard does not support DIMMs made up of 512 megabits (Mb) chips or
less.

• Memory modules with memory frequency higher than 2133 MHz and its corresponding
timing or the loaded X.M.P. Prole is not the JEDEC memory standard. The stability

and compatibility of these memory modules depend on the CPU’s capabilities and
other installed devices.

• The maximum 16GB memory capacity can be supported with 8GB or above DIMMs.
ASUS will update the memory QVL once the DIMMs are available in the market.

• The default memory operation frequency is dependent on its Serial Presence Detect
(SPD), which is the standard way of accessing information from a memory module.
Under the default state, some memory modules for overclocking may operate at a
lower frequency than the vendor-marked value.

• For system stability, use a more efcient memory cooling system to support a full

memory load (2 DIMMs) or overclocking condition.

• Refer to

www.asus.com for the latest Memory QVL (Qualied Vendors List)

1.4.3 Installing a DIMM

Unplug the power supply before adding or removing DIMMs or other system components.
Failure to do so can cause severe damage to both the motherboard and the components.

1. Press the retaining clips outward to unlock a DIMM socket.

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

1-8

Chapter 1: Product introduction

2

DIMM notch

1

1

Unlocked retaining clip

A DIMM is keyed with a notch so that it ts in only one direction. DO NOT force a DIMM into

a socket in the wrong direction to avoid damaging the DIMM.

3. Firmly insert the DIMM into the socket
until the retaining clips snap back

DIMM slot key

3

in place and the DIMM is properly
seated.

Locked Retaining Clip

1.4.4 Removing a DIMM

To remove a DIMM:

1. Simultaneously press the retaining clips outward to unlock the DIMM.

Support the DIMM lightly

with your ngers when

pressing the retaining
clips. The DIMM might get

damaged when it ips out

with extra force.

1

2. Remove the DIMM from the socket.

2

DIMM notch

1

1.5 Expansion slots

In the future, you may need to install expansion cards. The following sub-sections describe
the slots and the expansion cards that they support.

Unplug the power cord before adding or removing expansion cards. Failure to do so may
cause you physical injury and damage motherboard components.

ASUS B85M-K

1-9

1.5.1 Installing an expansion card

To install an expansion card:

1. Before installing the expansion card, read the documentation that came with it and
make the necessary hardware settings for the card.

2. Remove the system unit cover (if your motherboard is already installed in a chassis).

3. Remove the bracket opposite the slot that you intend to use. Keep the screw for later
use.

4. Align the card connector with the slot and press rmly until the card is completely

seated on the slot.

5. Secure the card to the chassis with the screw you removed earlier.

6. Replace the system cover.

1.5.2 Conguring an expansion card

After installing the expansion card, congure it by adjusting the software settings.

1. Turn on the system and change the necessary BIOS settings, if any. See Chapter 2 for
information on BIOS setup.

2. Assign an IRQ to the card.

3. Install the software drivers for the expansion card.

When using PCI cards on shared slots, ensure that the drivers support “Share IRQ” or that

the cards do not need IRQ assignments. Otherwise, conicts will arise between the two PCI

groups, making the system unstable and the card inoperable.

1.5.3 PCI Express x1 slots

This motherboard supports two PCI Express x1 network cards, SCSI cards, and other cards

that comply with the PCI Express specications.

1.5.4 PCI Express x16 slot

This motherboard supports one PCI Express x16 graphics card that complies with the PCI

Express specications.

IRQ assignments for this motherboard

A B C D E F G H

LAN - - shared - - - - -

PCIE x16 shared - - - - - -

PCIE x1_1 shared - - - - - - -

PCIE x1_2 - shared - - - - - -

Intel PCH SATA Controller - - - shared - - - -

HD Audio - - - - - - shared

USB2.0_1 - - - - - - - shared

USB2.0_2 - - - - shared - - ­USB3.0 - - - - - shared -

1-10

Chapter 1: Product introduction

1.6 Jumpers

B85M-K

B85M-K Clear RTC RAM

1 2 2 3

Normal

(Default)

Clear RTC

CLRTC

1. Clear RTC RAM (3-pin CLRTC)

This jumper allows you to clear the Real Time Clock (RTC) RAM in CMOS. You can
clear the CMOS memory of date, time, and system setup parameters by erasing
the CMOS RTC RAM data. The onboard button cell battery powers the RAM data in
CMOS, which include system setup information such as system passwords.

To erase the RTC RAM:

1. Turn OFF the computer and unplug the power cord.

2. Move the jumper cap from pins 1-2 (default) to pins 2-3. Keep the cap on pins 2-3
for about 5-10 seconds, then move the cap back to pins 1-2.

3. Plug the power cord and turn ON the computer.

4. Hold down the <
enter data.

Except when clearing the RTC RAM, never remove the cap on CLRTC jumper default
position. Removing the cap will cause system boot failure!

Del> key during the boot process and enter BIOS setup to re-

ASUS B85M-K

• If the steps above do not help, remove the onboard battery and move the jumper
again to clear the CMOS RTC RAM data. After clearing the CMOS, reinstall the
battery.

• You do not need to clear the RTC when the system hangs due to overclocking. For
system failure due to overclocking, use the CPU Parameter Recall (C.P.R.) feature.
Shut down and reboot the system, then the BIOS automatically resets parameter
settings to default values.

1-11

B85M-K

1 2

2 3

+5V

+5VSB

(Default)

B85M-K Keyboard and USB device wake-up

PS2_USBPW1-4

B85M-K

21

2 3

+5V

(Default)

+5VSB

USBPW5~10

B85M-K USB Device Wake Up

2. Keyboard and USB device wake-up (3-pin PS2_KBPW1~4)

This jumper allows you to enable or disable the keyboard wake-up feature. When you
set this jumper to pins 2-3 (+5VSB), you can wake up the computer by pressing a key
on the keyboard. This feature requires an ATX power supply that can supply at least 1A
on the +5VSB lead, and a corresponding setting in the BIOS.

3. USB device wake-up (3-pin USBPW5~10)

Set this jumper to +5V to wake up the computer from S1 sleep mode (CPU stopped,
DRAM refreshed, system running in low power mode) using the connected USB
devices. Set to +5VSB to wake up from S3 and S4 sleep modes (no power to CPU,
DRAM in slow refresh, power supply in reduced power mode).

• The USB device wake-up feature requires a power supply that can provide 500mA on

the +5VSB lead for each USB port; otherwise the system would not power up.

• The total current consumed must NOT exceed the power supply capability (+5VSB)
whether under normal conditions or in sleep mode.

1-12

Chapter 1: Product introduction

1.7 Connectors

2

6

3 4

5

1

10 9 8 7

1.7.1 Rear panel connectors

1. PS/2 Mouse port (green). This port is for a PS/2 mouse.

2. LAN (RJ-45) port.

through a network hub. Refer to the table below for the LAN port LED indications.

LAN port LED indications

Activity/Link LED Speed LED
Status Description Status Description

Off No link OFF 10Mbps connection
Orange Linked ORANGE 100Mbps connection
Orange (Blinking) Data activity GREEN 1Gbps connection
Orange (Blinking

then steady)

This port allows Gigabit connection to a Local Area Network (LAN)

Ready to wake
up from S5 mode

Activity Link

LED

LAN port

Speed

LED

3. Line In port (light blue). This port connects the tape, CD, DVD player, or other audio

sources.

4. Line Out port (lime)

. This port connects a headphone or a speaker. In 4-channel, 6-

channel, and 8-channel congurations, the function of this port becomes Front Speaker

Out.

5. Microphone port (pink)

To congure an 8-channel audio output:

Use a chassis with HD audio module in the front panel to support an 8-channel audio

output.

. This port connects a microphone.

ASUS B85M-K

1-13

Audio 2.1, 4.1, 5.1 or 7.1-channel conguration

Port

Light Blue

(Rear panel)

Lime (Rear panel) Line Out Front Speaker Out Front Speaker Out Front Speaker Out

Pink (Rear panel) Mic In Mic In Bass/Center Bass/Center

Lime (Front panel) — — — Side Speaker Out

For an 8-channel speaker setup, refer to the 7.1-channel conguration in the table.

Headset

2.1-channel

Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out

4.1-channel 5.1-channel 7.1-channel

6. USB 2.0 ports 3 and 4. These two 4-pin Universal Serial Bus (USB) ports are for USB

2.0/1.1 devices.

7. USB 3.0 ports 1 and 2.

These two 9-pin Universal Serial Bus (USB) ports connect to

USB 3.0/2.0 devices.

• Due to USB 3.0 controller limitations, USB 3.0 devices can only be used under a
Windows® OS environment and after USB 3.0 driver installation.

• The plugged USB 3.0 device may run on xHCI or EHCI mode, depending on the
operating system’s setting.

• USB 3.0 devices can only be used for data storage.

• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for faster
and better performance from your USB 3.0 devices.

8. Video Graphics Adapter (VGA) port. This 15-pin port is for a VGA monitor or other

VGA-compatible devices.

9. DVI-D port.

This port is for any DVI-D compatible device. DVI-D can’t be converted to

output RGB Signal to CRT and isn’t compatible with DVI-I.

10. PS/2 keyboard port (purple).

This port is for a PS/2 keyboard.

1-14

Chapter 1: Product introduction

1.7.2 Internal connectors

B85M-K

B85M-K Front panel audio connector

AAFP

PIN 1

AGNDNCSENSE1_RETUR

SENSE2_RETUR

PORT1 L

PORT1 R

PORT2 R

SENSE_SEND

PORT2 L

HD-audio-compliant

pin definition

PIN 1

AGNDNCNC

NC

MIC2

MICPWR

Line out_R

NC

Line out_L

Legacy AC’97

compliant definition

B85M-K

B85M-K Digital audio connector

SPDIF_OUT

+5V

SPDIFOUT

GND

1. Front panel audio connector (10-1 pin AAFP)

This connector is for a chassis-mounted front panel audio I/O module that supports
either HD Audio or legacy AC`97 audio standard. Connect one end of the front panel
audio I/O module cable to this connector.

• We recommend that you connect a high-denition front panel audio module to this
connector to avail of the motherboard’s high-denition audio capability.

• If you want to connect a high-denition front panel audio module to this connector, set

the Front Panel Type item in the BIOS setup to [HD]. If you want to connect an AC’97
front panel audio module to this connector, set the item to [AC97]. By default, this
connector is set to [HD].

2. Digital audio connector (4-1 pin SPDIF_OUT)

This connector is for an additional Sony/Philips Digital Interface (S/PDIF) port. Connect
the S/PDIF Out module cable to this connector, then install the module to a slot
opening at the back of the system chassis.

The S/PDIF module is purchased separately.

ASUS B85M-K

1-15

3. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)

CPU_FAN

CPU FAN PWM

CPU FAN IN

CPU FAN PWR

GND

B85M-K

B85M-K CPU fan connector

CHA_FAN

VCC

CHA FAN IN

CHA FAN PWR

GND

B85M-K

USB78

PIN 1

USB+5V

USB_P7-

USB_P7+

GND

NC

USB+5V

USB_P8-

USB_P8+

GND

USB56

PIN 1

USB+5V

USB_P5-

USB_P5+

GND

NC

USB+5V

USB_P6-

USB_P6+

GND

B85M-K USB2.0 connectors

Connect the fan cables to the fan connectors on the motherboard, ensuring that the
black wire of each cable matches the ground pin of the connector.

Do not forget to connect the fan cables to the fan connectors. Insufcient air ow inside

the system may damage the motherboard components. These are not jumpers! Do not
place jumper caps on the fan connectors! The CPU_FAN connector supports a CPU fan of
maximum 1A (12 W) fan power.

Only the 4-pin CPU fan support the ASUS Fan Xpert feature.

4. USB 2.0 connectors (10-1 pin USB78, USB56)

These connectors are for USB 2.0 ports. Connect the USB module cable to any of
these connectors, then install the module to a slot opening at the back of the system

chassis. These USB connectors comply with USB 2.0 specications and supports up to

480Mbps connection speed.

1-16

Never connect a 1394 cable to the USB connectors. Doing so will damage the
motherboard!

The USB 2.0 module is purchased separately.

Chapter 1: Product introduction

5. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)

B85M-K

B85M-K ATX power connectors

EATXPWR

PIN 1

GND
+5 Volts
+5 Volts
+5 Volts

-5 Volts
GND
GND
GND
PSON#
GND

-12 Volts
+3 Volts

+3 Volts
+12 Volts
+12 Volts

+5V Standby

Power OK

GND

+5 Volts

GND

+5 Volts

GND
+3 Volts
+3 Volts

ATX12V

PIN 1

+12V DC

+12V DC

GND

GND

B85M-K

B85M-K Speaker Out Connector

+5V

GND

GND

Speaker Out

SPEAKER

PIN 1

These connectors are for ATX power supply plugs. The power supply plugs are

designed to t these connectors in only one orientation. Find the proper orientation and
push down rmly until the connectors completely t.

•

We recommend that you use an ATX 12V Specication 2.0-compliant power supply

unit (PSU) with a minimum of 300W power rating. This PSU type has 24-pin and 4-pin
power plugs.

•

DO NOT forget to connect the 4-pin ATX +12V power plug. Otherwise, the system will
not boot up.

• We recommend that you use a PSU with higher power output when conguring a

system with more power-consuming devices or when you intend to install additional
devices. The system may become unstable or may not boot up if the power is
inadequate.

•

If you are uncertain about the minimum power supply requirement for your system,
refer to the Recommended Power Supply Wattage Calculator at http://support.asus.
com/PowerSupplyCalculator/PSCalculator.aspx?SLanguage=en-us for details.

6. Speaker connector (4-pin SPEAKER)

The 4-pin connector is for the chassis-mounted system warning speaker. The speaker
allows you to hear system beeps and warnings.

ASUS B85M-K

1-17

SATA3G_1

GND

RSATA_RXP1

RSATA_RXN1

GND

RSATA_TXN1

RSATA_TXP1

GND

SATA3G_2

GND

RSATA_RXP2

RSATA_RXN2

GND

RSATA_TXN2

RSATA_TXP2

GND

B85M-K

B85M-K SATA 3.0Gb/s connectors

7. Intel® B85 Serial ATA 3.0 Gb/s connectors (7-pin SATA3G 1~2 [dark brown])

SATA6G_3

GND

RSATA_RXP1

RSATA_RXN1

GND

RSATA_TXN1

RSATA_TXP1

GND

SATA6G_4

GND

RSATA_RXP2

RSATA_RXN2

GND

RSATA_TXN2

RSATA_TXP2

GND

SATA6G_1

GND

RSATA_RXP1

RSATA_RXN1

GND

RSATA_TXN1

RSATA_TXP1

GND

SATA6G_2

GND

RSATA_RXP2

RSATA_RXN2

GND

RSATA_TXN2

RSATA_TXP2

GND

B85M-K

B85M-K SATA 6.0Gb/s connectors

These connectors connect to Serial ATA 3.0 Gb/s hard disk drives via Serial ATA 3.0
Gb/s signal cables.

When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI].

1-18

8. Intel

®

B85 Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1~4 [yellow])

These connectors connect to Serial ATA 6.0 Gb/s hard disk drives via Serial ATA 6.0
Gb/s signal cables.

When using hot-plug and NCQ, set the SATA Mode Selection item in the BIOS to [AHCI].

Chapter 1: Product introduction

9. System panel connector (10-1 pin F_PANEL)

B85M-K

B85M-K System panel connector

PIN 1

PWR_BTN

PWR_LED+

PWR_LED-

PWR

GND

HDD_LED+

HDD_LED-

Ground

HWRST#

(NC)

F_PANEL

+PWR_LED-

+HDD_LED- RESET

USB3_910

USB3+5V

IntA_P1_SSRX-

IntA_P1_SSRX+

GND

IntA_P1_SSTX-

IntA_P1_SSTX+

GND

IntA_P1_D-

IntA_P1_D+

GND

PIN 1

USB3+5V

IntA_P2_SSRX-

IntA_P2_SSRX+

GND

IntA_P2_SSTX-

IntA_P2_SSTX+

GND

IntA_P2_D-

IntA_P2_D+

B85M-K

B85M-K USB3.0 Front panel connector

This connector supports several chassis-mounted functions.

• System power LED (2-pin PWR_LED)

This 2-pin connector is for the system power LED. Connect the chassis power LED
cable to this connector. The system power LED lights up when you turn on the system
power, and blinks when the system is in sleep mode.

• Hard disk drive activity LED (2-pin HDD_LED)

This 2-pin connector is for the HDD Activity LED. Connect the HDD Activity LED cable

to this connector. The HDD LED lights up or ashes when data is read from or written

to the HDD.

• ATX power button/soft-off button (2-pin PWR_BTN)

This connector is for the system power button.

• Reset button (2-pin RESET)

This 2-pin connector is for the chassis-mounted reset button for system reboot without
turning off the system power.

10. USB 3.0 connector (20-1 pin USB3_910)

These connectors allow you to connect a USB 3.0 module for additional USB 3.0 front

or rear panel ports. With an installed USB 3.0 module, you can enjoy all the benets of

USB 3.0 including faster data transfer speeds of up to 5Gbps, faster charging time for

USB-chargeable devices, optimized power efciency and backward compatibility with

USB 2.0.

ASUS B85M-K

1-19

1.8 Onboard LEDs

SB_PWR

B85M-K

B85M-K Onboard LED

1. Standby Power LED

The motherboard comes with a standby power LED that lights up to indicate that the
system is ON, in sleep mode, or in soft-off mode. This is a reminder that you should
shut down the system and unplug the power cable before removing or plugging in any
motherboard component. The illustration below shows the location of the onboard LED.

1-20

Chapter 1: Product introduction

1.9 Software support

1.9.1 Installing an operating system

This motherboard supports Windows® 7 (32bit/64bit), Windows® 8 (32bit/64bit) and
Windows® 8.1 (32bit/64bit) Operating Systems (OS). Always install the latest OS version and

corresponding updates to maximize the features of your hardware.

Motherboard settings and hardware options vary. Refer to your OS documentation for
detailed information.

1.9.2 Support DVD information

The Support DVD that comes with the motherboard package contains the drivers, software
applications, and utilities that you can install to avail all motherboard features.

The contents of the Support DVD are subject to change at any time without notice. Visit the
ASUS website at www.asus.com for updates.

To run the Support DVD

Place the Support DVD into the optical drive. If Autorun is enabled in your computer, the
DVD automatically displays the Specials screen which lists the unique features of your ASUS
motherboard. Click Drivers, Utilities, AHCI Driver, Manual, Contact and Specials tabs to
display their respective menus.

The following screen is for reference only.

Click an icon to
display Support
DVD/motherboard
information

Click an item to install

If Autorun is NOT enabled in your computer, browse the contents of the Support DVD to

locate the le ASSETUP.EXE from the BIN folder. Double-click the ASSETUP.EXE to run

the DVD.

ASUS B85M-K

1-21

1-22

Chapter 1: Product introduction

BIOS information

2

2.1 Managing and updating your BIOS

Save a copy of the original motherboard BIOS le to a USB ash disk in case you need to

restore the BIOS in the future. Copy the original motherboard BIOS using the ASUS Update
utility.

2.1.1 EZ Update

EZ Update is a utility that allows you to automatically update your motherboard’s softwares,
drivers and the BIOS version easily. With this utlity, you can also manually update the saved
BIOS and select a boot logo when the system goes into POST.

To launch EZ Update, click EZ Update on the AI Suite 3 main menu bar.

Click to automatically

update your

motherboard’s

driver, software and

rmware

EZ Update requires an Internet connection either through a network or an ISP (Internet
Service Provider).

ASUS B85M-K

Click to nd and

select the BIOS

from le

Click to select a

boot logo

Click to update
the BIOS

2-1

2.1.2 ASUS EZ Flash 2

The ASUS EZ Flash 2 feature allows you to update the BIOS without using an OS-based
utility.

Before you start using this utility, download the latest BIOS le from the ASUS website at

www.asus.com.

To update the BIOS using EZ Flash 2:

1. Insert the USB ash disk that contains the latest BIOS le to the USB port.

2. Enter the

ASUS EZ Flash 2 Utility and press <Enter> to enable it.

3. Press <Tab> to switch to the

4. Press the Up/Down arrow keys to nd the USB ash disk that contains the latest BIOS,

and then press <Enter>.

5. Press <Tab> to switch to the

6. Press the Up/Down arrow keys to nd the BIOS le, and then press <Enter> to perform

the BIOS update process. Reboot the system when the update process is done.

Advanced Mode of the BIOS setup program. Go to the Tool menu to select

Drive eld.

Folder Info eld.

• This function supports USB ash disks formatted using FAT32/16 on a single partition

only.

• Ensure to load the BIOS default settings to ensure system compatibility and stability.

Select the Load Optimized Defaults item under the Exit menu.

• DO NOT shut down or reset the system while updating the BIOS to prevent system
boot failure!

2-2

Chapter 2: Getting started

2.1.3 ASUS CrashFree BIOS 3 utility

The ASUS CrashFree BIOS 3 is an auto recovery tool that allows you to restore the BIOS le

when it fails or gets corrupted during the updating process. You can restore a corrupted BIOS

le using the motherboard support DVD or a USB ash drive that contains the updated BIOS
le.

• Before using this utility, rename the BIOS le in the removable device to B85MK.CAP.

• The BIOS le in the support DVD may not be the latest version. Download the latest
BIOS le from the ASUS website at www.asus.com.

Recovering the BIOS

To recover the BIOS:

1. Turn on the system.

2. Insert the support DVD to the optical drive or the USB ash drive that contains the
BIOS le to the USB port.

3. The utility automatically checks the devices for the BIOS le. When found, the utility
reads the BIOS le and enters ASUS EZ Flash 2 utility automatically.

4. The system requires you to enter BIOS Setup to recover BIOS setting. To ensure
system compatibility and stability, we recommend that you press <F5> to load default
BIOS values.

DO NOT shut down or reset the system while updating the BIOS! Doing so can cause
system boot failure!

2.1.4 ASUS BIOS Updater

The ASUS BIOS Updater allows you to update BIOS in DOS environment. This utility also

allows you to copy the current BIOS le that you can use as a backup when the BIOS fails or

gets corrupted during the updating process.

The succeeding utility screens are for reference only. The actual utility screen displays may
not be same as shown.

Before updating BIOS

1. Prepare the motherboard support DVD and a USB ash drive in FAT32/16 format and

single partition.

2. Download the latest BIOS le and BIOS Updater from the ASUS website at
http://support.asus.com and save them on the USB ash drive.

NTFS is not supported under DOS environment. Do not save the BIOS le and BIOS
Updater to a hard disk drive or USB ash drive in NTFS format.

3. Turn off the computer and disconnect all SATA hard disk drives (optional).

ASUS B85M-K

2-3

Booting the system in DOS environment

1. Insert the USB ash drive with the latest BIOS le and BIOS Updater to the USB port.

2. Boot your computer. When the ASUS Logo appears, press <F8> to show the

BIOS

Boot Device Select Menu. Insert the support DVD into the optical drive and select the

optical drive as the boot device.

3. At the FreeDOS prompt, type d: and press <Enter> to switch the disk from Drive C

(optical drive) to Drive D (USB ash drive).

Updating the BIOS le

To update the BIOS le using BIOS Updater:

1. At the FreeDOS prompt, type

bupdater /pc /g and press <Enter>.

2. The BIOS Updater screen appears as below.

ASUSTek BIOS Updater for DOS V1.30

B85M-K

2-4

BOARD:
VER: 0301
DATE: 13/10/2013

B85MK.CAP 4194304 2013-13-07 17:30:48

Chapter 2: Getting started

3. Press <Tab> to switch between screen elds and use the <Up/Down/Home/End> keys
to select the BIOS le and press <Enter>. BIOS Updater checks the selected BIOS le
and prompts you to conrm BIOS update.

4. Select Yes and press <Enter>. When BIOS update is done, press <ESC> to exit BIOS
Updater. Restart your computer.

DO NOT shut down or reset the system while updating the BIOS to prevent system boot
failure!

• For BIOS Updater version 1.30 or later, the utility automatically exits to the DOS
prompt after updating BIOS.

• Ensure to load the BIOS default settings to ensure system compatibility and stability.

Select the Load Optimized Defaults item under the Exit menu. Refer to section 2.9
Exit menu for details.

• Ensure to connect all SATA hard disk drives after updating the BIOS le if you have

disconnected them.

2.2 BIOS setup program

Use the BIOS Setup program to update the BIOS or congure its parameters. The BIOS

screens include navigation keys and brief online help to guide you in using the BIOS Setup
program.

Entering BIOS Setup at startup

To enter BIOS Setup at startup:

Press <Delete> during the Power-On Self Test (POST). If you do not press <Delete>,

•
POST continues with its routines.

Entering BIOS Setup after POST

To enter BIOS Setup after POST:

Press <Ctrl>+<Alt>+<Del> simultaneously.

•

Press the reset button on the system chassis.

•

Press the power button to turn the system off then back on. Do this option only if you

•

failed to enter BIOS Setup using the rst two options.

ASUS B85M-K

2-5

Using the power button, reset button, or the <Ctrl>+<Alt>+<Del> keys to force reset from
a running operating system can cause damage to your data or system. We recommend to
always shut down the system properly from the operating system.

• The BIOS setup screens shown in this section are for reference purposes only, and
may not exactly match what you see on your screen.

• Visit the ASUS website at
motherboard.

• Ensure that a USB mouse is connected to your motherboard if you want to use the
mouse to control the BIOS setup program.

• If the system becomes unstable after changing any BIOS setting, load the default
settings to ensure system compatibility and stability. Select the Load Optimized
Defaults item under the Exit menu. See section 2.9 Exit Menu for details.

• If the system fails to boot after changing any BIOS setting, try to clear the CMOS and
reset the motherboard to the default value. See section 1.6 Jumpers for information
on how to erase the RTC RAM.

www.asus.com to download the latest BIOS le for this

BIOS menu screen

The BIOS setup program can be used under two modes: EZ Mode and Advanced Mode.
You can change modes from the Exit menu or from the Exit/Advanced Mode button in the EZ
Mode/Advanced Mode screen.

EZ Mode

By default, the EZ Mode screen appears when you enter the BIOS setup program. The EZ
Mode provides you an overview of the basic system information, and allows you to select
the display language, system performance mode and boot device priority. To access the
Advanced Mode, click Exit/Advanced Mode, then select Advanced Mode.

2-6

The default screen for entering the BIOS setup program can be changed. Refer to the
Setup Mode item in section 2.7 Boot menu for details.

Chapter 2: Getting started

Selects the display language of the
BIOS setup program

Displays the CPU temperature, CPU voltage output,
DRAM information, and CPU/Chassis fan speed.

Exits the BIOS setup program without saving
the changes, saves the changes and resets
the system, or enters the Advanced Mode

Power
Saving mode

Selects the
Advanced mode
functions

ASUS B85M-K

Selects the
boot device
priority

Displays the
Advanced mode
menus

Normal mode

ASUS Optimal mode

Selects the boot device priority

Loads optimized default

Displays the system properties
of the selected mode on the
right hand side

• The boot device options vary depending on the devices you installed to the system.

• The

Boot Menu(F8) button is available only when the boot device is installed to the

system.

2-7

Advanced Mode

The Advanced Mode provides advanced options for experienced end-users to congure the
BIOS settings. The gure below shows an example of the Advanced Mode. Refer to the
following sections for the detailed congurations.

To access the EZ Mode, click Exit, then select ASUS EZ Mode.

Back button

Submenu item

Menu items

Pop-up window

Menu bar

Conguration
elds

Scroll bar

Navigation keys

General help

Last modied

settings

Menu bar

The menu bar on top of the screen has the following main items:

My Favorites For saving the frequently-used system settings and conguration
Main For changing the basic system conguration

Ai Tweaker For changing the overclocking settings

Advanced For changing the advanced system settings

Monitor

Boot For changing the system boot conguration

Tool For conguring options for special functions
Exit For selecting the exit options and loading default settings

For displaying the system temperature, power status, and changing the
fan settings

Quick note

2-8

Chapter 2: Getting started

2.3 Main menu

The Main menu screen appears when you enter the Advanced Mode of the BIOS Setup
program. The Main menu provides you an overview of the basic system information, and
allows you to set the system date, time, language, and security settings.

• If you have forgotten your BIOS password, erase the CMOS Real Time Clock (RTC)

RAM to clear the BIOS password. See section 1.6 Jumpers for information on how to
erase the RTC RAM.

• The

Administrator or User Password items on top of the screen show the default

Not Installed. After you set a password, these items show Installed.

ASUS B85M-K

2-9

2.4 Ai Tweaker menu

The Ai Tweaker menu items allow you to congure overclocking-related items.

Be cautious when changing the settings of the Ai Tweaker menu items. Incorrect eld

values can cause the system to malfunction.

The conguration options for this section vary depending on the CPU and DIMM model you

installed on the motherboard.

Scroll down to display the following items:

2-10

Chapter 2: Getting started

2.5 Advanced menu

The Advanced menu items allow you to change the settings for the CPU and other system
devices.

Be cautious when changing the settings of the Advanced menu items. Incorrect eld values

can cause the system to malfunction.

ASUS B85M-K

2-11

2.6 Monitor menu

The Monitor menu displays the system temperature/power status, and allows you to change
the fan settings.

Scroll down to display the following items:

2-12

Chapter 2: Getting started

2.7 Boot menu

The Boot menu items allow you to change the system boot options.

Scroll down to display the following items:

ASUS B85M-K

2-13

2.8 Tools menu

The Tools menu items allow you to congure options for special functions. Select an item

then press <Enter> to display the submenu.

2.9 Exit menu

The Exit menu items allow you to load the optimal default values for the BIOS items, and
save or discard your changes to the BIOS items. You can access the EZ Mode from the Exit
menu.

2-14

Chapter 2: Getting started

Appendices

Notices

Federal Communications Commission Statement

This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:

This device may not cause harmful interference.

•

This device must accept any interference received including interference that may cause

•
undesired operation.

This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:

Reorient or relocate the receiving antenna.

•

Increase the separation between the equipment and receiver.

•

Connect the equipment to an outlet on a circuit different from that to which the receiver is

•
connected.

Consult the dealer or an experienced radio/TV technician for help.

•

The use of shielded cables for connection of the monitor to the graphics card is required

to assure compliance with FCC regulations. Changes or modications to this unit not

expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.

IC: Canadian Compliance Statement

Complies with the Canadian ICES-003 Class B specications. This device complies with RSS

210 of Industry Canada. This Class B device meets all the requirements of the Canadian
interference-causing equipment regulations.

This device complies with Industry Canada license exempt RSS standard(s). Operation is
subject to the following two conditions: (1) this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.

Cut appareil numérique de la Classe B est conforme à la norme NMB-003 du Canada.
Cet appareil numérique de la Classe B respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.

Cet appareil est conforme aux normes CNR exemptes de licence d’Industrie Canada. Le
fonctionnement est soumis aux deux conditions suivantes :

(1) cet appareil ne doit pas provoquer d’interférences et

(2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer
un fonctionnement non souhaité de l’appareil.

ASUS B85M-K

A-1

Canadian Department of Communications Statement

This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.

This class B digital apparatus complies with Canadian ICES-003.

VCCI: Japan Compliance Statement

VCCI Class B Statement

KC: Korea Warning Statement

REACH

Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://csr.asus.com/english/REACH.htm.

DO NOT throw the motherboard in municipal waste. This product has been designed to
enable proper reuse of parts and recycling. This symbol of the crossed out wheeled bin
indicates that the product (electrical and electronic equipment) should not be placed in
municipal waste. Check local regulations for disposal of electronic products.

DO NOT throw the mercury-containing button cell battery in municipal waste. This symbol
of the crossed out wheeled bin indicates that the battery should not be placed in municipal
waste.

ASUS Recycling/Takeback Services

ASUS recycling and takeback programs come from our commitment to the highest standards
for protecting our environment. We believe in providing solutions for you to be able to
responsibly recycle our products, batteries, other components as well as the packaging
materials. Please go to http://csr.asus.com/english/Takeback.htm for detailed recycling
information in different regions.

A-2

Appendices

ASUS contact information

ASUSTeK COMPUTER INC.

Address 15 Li-Te Road, Peitou, Taipei, Taiwan 11259
Telephone [phone]
Fax [phone]
E-mail [e-mail]
Web site www.asus.com.tw

Technical Support

Telephone [phone]
Online support support.asus.com

ASUS COMPUTER INTERNATIONAL (America)

Address 800 Corporate Way, Fremont, CA 94539, USA
Telephone [phone]
Fax [phone]
Web site usa.asus.com

Technical Support

Telephone [phone]
Support fax [phone]
Online support support.asus.com

ASUS COMPUTER GmbH (Germany and Austria)

Address Harkort Str. 21-23, D-40880 Ratingen, Germany
Fax [phone]
Web site www.asus.de
Online contact www.asus.de/sales

Technical Support

Telephone [phone]*
Support Fax [phone]
Online support support.asus.com

* EUR 0.14/minute from a German xed landline; EUR 0.42/minute from a mobile phone.

Manufacturer: ASUSTeK Computer Inc.

Address: 4F, No. 150, LI-TE RD., PEITOU, TAIPEI 112,

Authorised representative in
Europe:

Address: HARKORT STR. 21-23, 40880 RATINGEN,

ASUS B85M-K

TAIWAN R.O.C.

ASUS Computer GmbH

GERMANY

A-3

DECLARATION OF CONFORMITY

Per FCC Part 2 Section 2. 1077(a)

Responsible Party Name:

Asus Computer International

Address: 800 Corporate Way, Fremont

, CA 94539.

Phone/Fax No: [phone]/[phone]

hereby declares that the product

Product Name : Motherboard

Model Number : B85M-K

Conforms to the following specifications:

FCC Part 15, Subpart B, Unintentional Radiators

Supplementary Information:

This device complies with part 15 of the FCC Rules. Operation is subject to the

following two conditions: (1) This device may not cause harmful interference,

and (2) this device must accept any interference received, including interference

that may cause undesired operation.

Representative Person’s Name : Steve Chang / President

Signature :

Date : Oct. 14, 2013

Ver. 120601

EC Declaration of Conformity

We, the undersigned,

Manufacturer:

ASUSTeK COMPUTER INC.

Address, City:

4F, No. 150, LI-TE Rd., PEITOU, TAIPEI 112, TAIWAN

Country:

TAIWAN

Authorized representative in Europe:

ASUS COMPUTER GmbH

Address, City:

HARKORT STR. 21-23, 40880 RATINGEN

Country:

GERMANY

declare the following apparatus:

Product name :

Motherboard

Model name : B85M-K

conform with the essential requirements of the following directives:

2004/108/EC-EMC Directive

EN 55022:2010+AC:2011

EN 61000-3-2:2006+A2:2009

EN 55013:2001+A1:2003+A2:2006

EN 55024:2010

EN 61000-3-3:2008

EN 55020:2007+A11:2011

1999/5/EC-R &TTE Directive

EN 300 328 V1.7.1(2006-10)

EN 300 440-1 V1.6.1(2010-08)

EN 300 440-2 V1.4.1(2010-08)

EN 301 511 V9.0.2(2003-03)

EN 301 908-1 V5.2.1(2011-05)

EN 301 908-2 V5.2.1(2011-07)

EN 301 893 V1.6.1(2011-11)

EN 302 544-2 V1.1.1(2009-01)

EN 302 623 V1.1.1(2009-01)

EN 50360:2001

EN 62479:2010

EN 50385:2002

EN 62311:2008

EN 301 489-1 V1.9.2(2011-09)

EN 301 489-3 V1.4.1(2002-08)

EN 301 489-4 V1.4.1(2009-05)

EN 301 489-7 V1.3.1(2005-11)

EN 301 489-9 V1.4.1(2007-11)

EN 301 489-17 V2.2.1(2012-09)

EN 301 489-24 V1.5.1(2010-09)

EN 302 326-2 V1.2.2(2007-06)

EN 302 326-3 V1.3.1(2007-09)

EN 301 357-2 V1.4.1(2008-11)

EN 302 291-1 V1.1.1(2005-07)

EN 302 291-2 V1.1.1(2005-07)

2006/95/EC-LVD Directive

EN 60950-1 / A12:2011 EN 60065:2002 / A12:2011

2009/125/EC-ErP Directive

Regulation (EC) No. 1275/2008

Regulation (EC) No. 642/2009

Regulation (EC) No. 278/2009

Regulation (EC) No. 617/2013

2011/65/EU-RoHS Directive

Ver. 130816

CE marking

Declaration Date: 14/10/2013

Year to begin affixing CE marking:2013

Position : CEO

Name :

Jerry Shen

Signature :

__________

(EC conformity marking)

A-4

Appendices