ASUS B85-PLUS User Manual

B85-PLUS

Motherboard

E7928 First Edition V1

April 2013

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), EVEN IF ASUS HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES ARISING FROM ANY DEFECT OR ERROR IN THIS MANUAL OR PRODUCT.

SPECIFICATIONS AND INFORMATION CONTAINED IN THIS MANUAL ARE FURNISHED FOR INFORMATIONAL USE ONLY, AND ARE SUBJECT TO CHANGE AT ANY TIME WITHOUT NOTICE, AND SHOULD NOT BE CONSTRUED AS A COMMITMENT BY ASUS. ASUS ASSUMES NO RESPONSIBILITY OR LIABILITY FOR ANY ERRORS OR INACCURACIES THAT MAY APPEAR IN THIS MANUAL, INCLUDING THE PRODUCTS AND SOFTWARE DESCRIBED IN IT.

Products and corporate names appearing in this manual may or may not be registered trademarks or

copyrights of their respective companies, and are used only for identication or explanation and to the owners’ benet, without intent to infringe.

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 can coordinate the terms and cost of shipment with you.

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 code we would be much obliged if you give us a notication to the email address gpl@asus.com, stating the product and describing the problem (please DO NOT send large attachments such as source code archives, etc. to this email address).

Contents

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

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

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

B85-PLUS specications summary .......................................................... vi

Chapter 1: 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 ........................................................................

Chapter 2: BIOS information

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

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

2.3 My Favorites .................................................................................

2.4 Main menu ..................................................................................

2.5 Ai Tweaker menu ........................................................................

2.6 Advanced menu .........................................................................

2.7 Monitor menu .............................................................................

2.8 Boot menu ..................................................................................

2.9 Tools menu .................................................................................

2.10 Exit menu ....................................................................................

1-1

1-3

1-7

1-9

1-10

1-11

1-19

1-20

2-6

2-9

2-10

2-12

2-24

2-34

2-37

2-43

2-44

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 components, 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 be exposed to moisture.

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. It includes descriptions of the switches, jumpers, and connectors on the motherboard.

• Chapter 2: BIOS information

This chapter discusses changing system settings through the BIOS Setup menus. Detailed descriptions fo the BIOS parameters are also provided.

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 completing a task.

CAUTION: Information to prevent damage to the components when completing 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 (+).

Package contents

Check your motherboard package for the following items.

Motherboard ASUS B85-PLUS 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.

B85-PLUS specications summary

CPU

LGA1150 socket for Intel

Celeron® processors

Supports Intel® 22nm CPU

Supports Intel® Turbo Boost Technology 2.0

* The Intel® Turbo Boost Technology 2.0 support depends on the CPU types. ** Refer to www.asus.com for Intel® CPU support list.

Chipset Intel® B85 Express Chipset

Memory 4 x DIMM, max. 32GB, DDR3 1600 / 1333 / 1066 MHz, non-ECC, un-buffered

Graphics Integrated graphics processor - Intel® HD Graphics support

Multi-GPU Support

Expansion slots

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

memory

Dual-channel memory architecture

Supports Intel® Extreme Memory Prole (XMP)

* Due to Intel® chipsest limitation, DDR3 1600MHz and higher memory modules on XMP

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

** When you install a total memory of 4GB capacity or more, Windows

system may only recognize less than 3GB. We recommend a maximum of 3GB system memory if you are using a Windows® 32-bit operating system.

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

Multi-VGA output support: DVI-D and RGB ports

- Supports DVI-D with max.resolution of 1920 x 1200 @60Hz

- Supports RGB with max. resolution of 1920 x 1200 @60Hz

Supports Intel® InTruTM 3D/Quick Sync Video/Clear Video HD Technology/Insider

Maximum shared memory of 1024MB

Supports AMD® CrossFireXTM technology

1 x PCI Express 3.0/2.0 x16 slot (@ x16)

1 x PCI Express 2.0 x16 slot (@ x4, compatible with PCIe x4, x1 devices)

2 x PCI Express 2.0 x1 slots

3 x PCI slots

- Supports jack-detection, multi-streaming and front panel jack-retasking

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

output.

4th Generation Core™ i7 / i5 / i3, Pentium®, and

32-bit operating

(continued on the next page)

B85-PLUS specications summary

Storage Intel® B85 Express Chipset:

LAN

USB Intel® B85 Express Chipset - supports ASUS USB 3.0 Boost

ASUS unique features

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

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

Supports Intel® Rapid Start Technology, Intel® Smart Connect Technology*

* These functions will work depending on the CPU installed.

Realtek® 8111G Gigabit LAN controller

2 x USB 3.0/2.0 ports at midboard for front panel support

2 x USB 3.0/2.0 ports at rear panel (blue)

8 x USB 2.0 ports (4 ports at midboard, 4 ports at back panel)

ASUS 5X Protection

- ASUS motherboards safeguard your PC with 5X Protection: DIGI+VRM, DRAM Fuse, ESD Guards, All 5K-Hour Solid Capacitors, and Stainless Steel Back I/O to ensure the best quality, reliability, and durability

ASUS Dig+VRM

- ASUS Digital Power Control: Digital Power Design for CPU

- ASUS 4 Phase Power Design

- ASUS CPU power utility

ASUS DRAM Fuse

- Enhanced DRAM overcurrent protection and short circuit damage prevention

ASUS ESD Guards

- Strong ESD protection for extended component lifespan

ASUS All 5K-Hour Solid Capacitors

- 2.5x Long Lifespan with excellent durability

ASUS Stainless Steel Back I/O

- 3x More durable corrosion-resistant coating

ASUS Exclusive Features:

- ASUS EPU

- ASUS USB 3.0 Boost featuring speedy USB 3.0 transmission

- ASUS Disk Unlocker featuring 3TB+ HDD support

- ASUS Network iControl featuring instant network network bandwidth domination for top network program in use

- ASUS GPU Boost

- ASUS AI Suite 3

- ASUS Anti Surge

ASUS Quiet Thermal Solution:

- ASUS Fanless Design: stylish heatsink solution

- ASUS Fan Xpert 2 featuring Fan Auto Tuning function for optimized speed

control, providing an excellent tailored fan speed setting for each fan

ASUS EZ DIY:

- ASUS UEFI BIOS EZ Mode featuring friendly graphical user interface

- ASUS CrashFree BIOS 3

- ASUS EZ Flash 2

ASUS Q-Design

- ASUS Q-Slot

(continued on the next page)

vii

B85-PLUS specications summary

Back Panel I/O ports

Internal connectors

BIOS features 128 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI v2.0, WfM2.0, SM BIOS v2.7,

Manageability

Support DVD Drivers

Form factor

1 x PS/2 keyboard port (purple)

1 x PS/2 mouse port (green)

1 x DVI-D port

1 x RGB port

1 x LAN (RJ-45) port

4 x USB 2.0/1.1 ports

2 x USB 3.0/2.0 ports

3 x Audio jacks support 8-channel audio output

1 x USB 3.0 connector supports additional 2 USB 3.0 ports

2 x USB 2.0 connectors support additional 4 USB 2.0 ports

2 x SATA 3.0 Gb/s connectors (dark brown)

4 x SATA 6.0 Gb/s connector (yellow)

1 x 4-pin CPU fan connector

2 x 4-pin Chassis fan connectors

1 x Front panel audio connector (AAFP)

1 x System panel connector

1 x S/PDIF connector

1 x COM Header

1 x Clear CMOS jumper

1 x 24-pin EATX power connector

1 x 8-pin ATX 12V power connector

ACPI v4.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS

3, My Favorites, Quick Note, Last Modied log, F12 PrintScreen, F3 Shortcut

function, and ASUS DRAM SPD (Serial Presence Detect) memory information

Wfm 2.0, DMI 2.0, WOL by PME, PXE

ASUS utilities

EZ Update

Anti-virus software (OEM version)

ATX form factor: 12.0”x 8.2” (30.5cm x 20.8cm)

viii

Specications are subject to change without notice.

Product introduction

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.

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

1.2.1 Placement direction

When installing the motherboard, 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.

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.

ASUS B85-PLUS

1-1

B85-PLUS

Place this side

B85-PLUS

PCIEX16_1

PCIEX16_2

PCIEX1_1

PCIEX1_2

ASM 1083

PCI1

PCI2

PCI3

USB1112 USB1314

AAFP

EATXPWR

CPU_FAN

CHA_FAN2

BATTERY

Super

I/O

Realtek ALC887

RTL

8111G

KBMS

DVI_VGA

128Mb

BIOS

SB_PWR

CLRTC

20.8cm(8.2in)

Intel

B85

DDR3 DIMM_A1 (64bit, 240-pin module)

DDR3 DIMM_A2 (64bit, 240-pin module)

DDR3 DIMM_B1 (64bit, 240-pin module)

DDR3 DIMM_B2 (64bit, 240-pin module)

SATA6G_3SATA6G_4

PANEL

SATA_5

SATA6G_1SATA6G_2

SATA_6

AUDIO

LAN_USB34

USB3_56

USB910

CHA_FAN1

SPDIF_OUT

30.5cm(12.0in)

LGA1150

DIGI +VRM

COM

EATX12V

USB3_12

32 31 4 5

towards the rear

of the chassis

1.2.3 Motherboard layout

1-2

Chapter 1: Product introduction

1.2.4 Layout contents

B85-PLUS

B85-PLUS CPU socket LGA1150

Connectors/Jumpers/Slots/LED Page

1. Serial port connectors (10-1 pin COM) 1-13

2. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V) 1-14

3. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2) 1-16

4. Intel® LGA1150 CPU socket 1-3

5. DDR3 DIMM slots 1-7

6. Intel® B85 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~4 [yellow]) 1-17

7. USB 3.0 connector (20-1 pin USB3_12) 1-16

8. Onboard LED (SB_PWR) 1-19

9. Clear RTC RAM (3-pin CLRTC) ) 1-10

10. Intel® B85 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~2 [dark brown]) 1-17

11. System panel connector (20-8 pin F_PANEL) 1-18

12. USB 2.0 connectors (10-1 pin USB11~14) 1-15

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

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

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® , Celeron® processors.

ASUS B85-PLUS

1-3

Unplug all power cables before installing the CPU.

• Ensure that you install the correct CPU designed for the LGA1150 socket only. DO NOT install a CPU designed for LGA1155 and LGA1156 sockets on the LGA1150 socket.

• 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.

1.3.1 Installing the CPU

1-4

Chapter 1: Product introduction

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.

ASUS B85-PLUS

1-5

To install the CPU heatsink and fan assembly

3 4

To uninstall the CPU heatsink and fan assembly

1-6

Chapter 1: Product introduction

1.4 System memory

B85-PLUS

B85-PLUS 240-pin DDR3 DIMM sockets

DIMM_A1

DIMM_A2

DIMM_B1

DIMM_B2

1.4.1 Overview

This motherboard comes with four 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.

Channel Sockets

Channel A DIMM_A1 & DIMM_A2

Channel B DIMM_B1 & DIMM_B2

1.4.2 Memory congurations

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

• 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

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 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

• This motherboard does not support DIMMs made up of 512Mb (64MB) chips or less.

chipset limitation, DDR3 1600MHz and higher memory modules on XMP

OS, when you install 4GB

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

motherboard.

OS.

ASUS B85-PLUS

1-7

• 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.

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

memory load (4 DIMMs).

• Visit the ASUS website at:

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.

www.asus.com for the latest QVL.

1. Press the retaining clips outward to unlock a

DIMM notch

DIMM socket.

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

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

DIMM slot key

socket until the retaining clips snap back 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.

1-8

Chapter 1: Product introduction

Support the DIMM lightly with

your ngers when pressing the

retaining clips. The DIMM might

get damaged when it ips out

with extra force.

2. Remove the DIMM from the socket.

DIMM notch

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.

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.

ASUS B85-PLUS

1-9

1.5.3 PCI slots

The PCI slot supports cards such as a LAN card, SCSI card, USB card, and other cards that

comply with PCI specications.

1.5.3 PCI Express 2.0 x1 slots

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

comply with the PCI Express specications.

1.5.4 PCI Express x16 slots

This motherboard supports PCI Express x16 network cards, SCSI cards, and other cards that

comply with the PCI Express specications.

IRQ assignments for this motherboard

A B C D E F G H

IGD shared – – – – – – –

Audio Controller – – – – – – shared –

EHCI 1 Controller – – – – – – – shared EHCI 2 Controller – – – – shared – – – XHCI Controller – – – – – shared – – SATA Controller – – – shared – – – – PCIE x16_1 shared – – – – – – – PCIE x16_2 shared – – – – – – – PCIE x1_1 shared – – – – – – – PCIE x1_2 – shared – – – – – – RTL8111G – – shared – – – – –

PCI Slot 1 – – – shared – – – –

PCI Slot 2 shared – – – – – – –

PCI Slot 3 – shared – – – – – –

1.6 Jumpers

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.

1-10

Chapter 1: Product introduction

B85-PLUS

B85-PLUS Clear RTC RAM

1 2 2 3

Normal

(Default)

Clear RTC

CLRTC

To erase the RTC RAM:

4 53

9 7

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

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!

• 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.

1.7 Connectors

1.7.1 Rear panel connectors

ASUS B85-PLUS

1-11

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

2. Video Graphics Adapter (VGA) port.

This 15-pin port is for a VGA monitor or other

VGA-compatible devices.

3. LAN (RJ-45) port.

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

through a network hub.

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

Data activity GREEN 1Gbps connection

(Blinking) Orange

(Blinking then steady)

Ready to wake up from S5 mode

Activity Link

LED

LAN port

Speed

LED

4. Line In port (light blue).

This port connects to the tape, CD, DVD player, or other

audio sources.

5. Line Out port (lime).

This port connects to a headphone or a speaker. In the 4, 6 and

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

6. Microphone port (pink). This port connects to a microphone.

Refer to the audio conguration table for the function of the audio ports in 2, 4, 6, or 8channel conguration.

Audio 2, 4, 6, or 8-channel conguration

output.

Headset

2-channel

4-channel 6-channel 8-channel

Port

Light Blue (Rear panel) Line In Rear Speaker Out Rear Speaker Out Rear Speaker Out 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

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

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

2.0/1.1 devices.

8. USB 3.0 ports 5 and 6

. These two 9-pin Universal Serial Bus (USB) ports are for USB

3.0 devices.

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Chapter 1: Product introduction

• Due to USB 3.0 controller limitations, USB 3.0 devices can only be used under a

B85-PLUS

B85-PLUS Serial port (COM) connector

PIN 1

COM

D C D

DX T

D N G

S T R

I R

D X R

R T D

RS D

S T C

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.

• Due to the design of the Intel

8 series chipset, all USB devices connected to the

USB 2.0 and USB 3.0 ports are controlled by the xHCI controller. Some legacy USB

devices must update their rmware for better compatibility.

• Intel display architecture design supports the following maximum supported pixel clocks (Pixel Clock = H total x V Total x Frame Rate (Screen refresh rate)):

- DVI port: 165 MHz

- VGA port: 180 MHz

9. USB 2.0 ports 9 and 10. These two 4-pin Universal Serial Bus (USB) ports are for

USB 2.0/1.1 devices.

10. 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 is not compatible with DVI-I.

11. PS/2 keyboard port (purple).

This port is for a PS/2 keyboard.

1.7.2 Internal connectors

1. Serial port connector (10-1 pin COM)

This connector is for a serial (COM) port. Connect the serial port module cable to this connector, then install the module to a slot opening at the back of the system chassis.

The COM module is purchased separately.

ASUS B85-PLUS

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B85-PLUS

B85-PLUS Digital audio connector

SPDIF_OUT

+5V

SPDIFOUT

GND

2. ATX power connectors (24-pin EATXPWR, 8-pin EATX12V)

B85-PLUS

B85-PLUS 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

EATX12V

PIN 1

+12V DC

GND

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.

•

For a fully congured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12V Specication 2.0 (or later version) and provides a

minimum power of 350W.

•

DO NOT forget to connect the 4-pin/8-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.

3. 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.

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Chapter 1: Product introduction

B85-PLUS

B85-PLUS USB2.0 connectors

USB+5V

USB_P11-

USB_P11+

GND

USB+5V

USB_P12-

USB_P12+

GND

USB1112

PIN 1

USB+5V

USB_P13-

USB_P13+

GND

USB+5V

USB_P14-

USB_P14+

GND

USB1314

PIN 1

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

B85-PLUS

B85-PLUS Front panel audio connector

AAFP

AGNDNCSENSE1_RETUR

SENSE2_RETUR

PORT1 L

PORT1 R

PORT2 R

SENSE_SEND

PORT2 L

HD-audio-compliant

pin definition

PIN 1

AGNDNCNC

MIC2

MICPWR

Line out_R

Line out_L

Legacy AC’97

compliant definition

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]. See section 2.6.7 Onboard Devices Conguration for details.

5. USB 2.0 connectors (10-1 pin USB1112, USB1314)

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.

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

ASUS B85-PLUS

The USB 2.0 module is purchased separately.

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CHA_FAN1

CHA FAN PWM

CHA FAN IN

CHA FAN PWR

GND

CPU_FAN

CPU FAN PWM

CPU FAN IN

CPU FAN PWR

GND

CHA_FAN2

CHA FAN PWM

CHA FAN IN

CHA FAN PWR

GND

B85-PLUS

B85-PLUS Fan connectors

6. USB 3.0 connector (20-1 pin USB3_12)

B85-PLUS

B85-PLUS USB3.0 Front panel connector

USB3_12

USB3+5V

This connector allows 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.

The USB 3.0 module is purchased separately.

7. CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN1/2)

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.

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Chapter 1: Product introduction

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