Asus B85M-GAMER User’s Manual

B85M-GAMER

<![if ! IE]>

<![endif]>Motherboard

E10068

First Edition V1

January 2015

Copyright © 2015 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, modified or altered, unless such repair, modification 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 identification or explanation and to the owners’ benefit, 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 notification to the email address [e-mail], stating 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-GAMER specifications summary....................................................	vi

Chapter 1:		Product introduction
1.1	Before you proceed......................................................................		1-1
1.2	Motherboard overview.................................................................		1-2
1.3	Central Processing Unit (CPU)....................................................		1-4
1.4	System memory............................................................................		1-7
1.5	Expansion slots..........................................................................		1-10
1.6	Jumpers	.......................................................................................	1-12
1.7	Connectors..................................................................................		1-13
1.8	Software ........................................................................support		1-21

Chapter 2:		BIOS information
2.1	Managing and updating your BIOS		............................................. 2-1
2.2	BIOS setup program.....................................................................		2-6
2.3	My Favorites................................................................................		2-10
2.4	Main menu...................................................................................		2-11
2.5	Ai Tweaker menu........................................................................		2-13
2.6	Advanced menu..........................................................................		2-26
2.7	Monitor menu..............................................................................		2-35
2.8	Boot menu...................................................................................		2-39
2.9	Tool menu....................................................................................		2-45
2.10	Exit menu.....................................................................................		2-46
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 fix it by yourself. Contact a qualified 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 qualified service technician or your retailer.

About this guide

This user guide contains the information you need when installing and configuring 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 for the BIOS parameters are also provided.

iv

Where to find 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 flyers, 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	Used to emphasize a word or a phrase.
<Key>	Keys enclosed in the less-than and greater-than sign
	means that you must press the enclosed key.
	Example: <Enter> means that you must press the Enter or
	Return key.
<Key1> + <Key2> + <Key3>	If you must press two or more keys simultaneously, the key
	names are linked with a plus sign (+).

v

Package contents

Check your motherboard package for the following items.

Motherboard	ASUS Gaming Motherboard – B85M-GAMER
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-GAMER specifications summary

		LGA1150 socket for Intel® 4th and new 4th Generation Core™ i7 / i5 / i3,
		Pentium®, and Celeron® processors
	CPU	Supports Intel® 22nm CPU
		Supports Intel® Turbo Boost Technology 2.0*
		* The Intel® Turbo Boost Technology 2.0 support depends on the type of CPU installed
		in your system.
		** Refer to www.asus.com for Intel® CPU support list.
	Chipset	Intel® B85 Express Chipset
		4 x DIMM, maximum 32 GB, DDR3 1600 / 1333 / 1066 MHz, non-ECC, un-buffered
		memory*
		Dual-channel memory architecture
	Memory	Supports Intel® Extreme Memory Profile (XMP)
		* Hyper DIMM support is subject to the physical characteristics of individual CPUs.
		Please refer to Memory QVL (Qualified Vendors List) for details.
		** Refer to www.asus.com for the latest Memory QVL (Qualified Vendors List).
		*** Due to Intel® chipset limitation, DDR3 1600 MHz and higher memory modules on XMP
		mode will run at the maximum transfer rate of DDR3 1600 MHz.
		Integrated graphics processor - Intel® HD Graphics support
		- Supports HDMI with maximum resolution of 4096 x 2160 @24 Hz / 2560 x
			1600 @60 Hz
	Graphics	- Supports D-Sub with maximum resolution of 1920 x 1200 @60 Hz
		-	Supports Intel® InTruTM 3D, Quick Sync Video, Intel® Clear Video HD
			Technology, and Intel® Insider™
		-	Maximum shared memory of 1024 MB
	Expansion	1 x PCI Express 3.0/2.0 x16 slot (gray, at x16 mode)
	slots	2 x PCI Express 2.0 x1 slots

(continued on the next page)

vi

B85M-GAMER specifications summary

		Intel® B85 Express Chipset:
		- 4 x Serial ATA 6.0	Gb/s connectors (gray)
	Storage	- 2 x Serial ATA 3.0	Gb/s connectors (black)
		- Supports Intel® Rapid Start Technology and Intel® Smart Connect
		Technology*
		* These functions work depending on the CPU installed.
	LAN	Intel® Gigabit LAN + LANGuard

SupremeFX 7.1-channel High Definition Audio CODEC*

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

-High quality 115dB SNR stereo playback output

	Audio	Audio Features:
		-	SupremeFX ShieldingTM Technology
		-	ELNA premium audio capacitors
		-	Headphone AMP
		* Use a chassis with HD audio module in the front panel to support an 7.1-channel
			audio output.
		Intel® B85 Express Chipset - support ASUS USB 3.0 Boost
	USB	- 4 x USB 3.0/2.0 ports (2 ports at mid-board, 2 ports at rear panel)
		Intel® B85 Express Chipset
		- 6 x USB 2.0/1.1 ports (4 ports at mid-board, 2 ports at rear panel)
	ASUS	Gamer's Guardian
	Gaming	-	ESD Guards on LAN, Audio, KBMS and USB3.0/2.0 ports
	Features	-	DRAM Overcurrent Protection
		- Stainless Steel Back I/O
		- ASUS DIGI+ VRM

Performance Optimization

-Dual Intelligent Processors 2 with DIGI+ VRM

-ASUS USB 3.0 Boost featuring speedy USB 3.0 transmission

-ASUS Fan Xpert

EZ DIY

-AI Suite 3

-Disk Unlocker

-AI Charger

Award-winning BIOS Design

-ASUS UEFI BIOS with EZ Mode featuring friendly graphics user interface

-ASUS CrashFree BIOS 3

-ASUS EZ Flash 2

(continued on the next page)

vii

B85M-GAMER specifications summary

		1 x PS/2 keyboard port
		1 x PS/2 mouse port
		1 x HDMI port
	Rear Panel I/O	1 x D-Sub port
	ports	1 x LAN (RJ45) port
		2 x USB 3.0/2.0 ports
		2 x USB 2.0/1.1 ports
		8-channel audio I/O ports
		1 x 19-pin USB 3.0/2.0 connector supports additional 2 USB 3.0/2.0 ports
		2 x USB 2.0/1.1 connectors support additional 4 USB 2.0/1.1 ports
		1 x System panel
		1 x Front panel audio connector (AAFP)
		4 x SATA 6.0 Gb/s connectors (gray)
	Internal I/O	2 x SATA 3.0 Gb/s connectors (black)
	connectors	1 x CPU Fan connector (4-pin)
		1 x Chassis Fan connector (4-pin)
		1 x COM connector
		1 x 24-pin EATX Power connector
		1 x 8-pin ATX 12V Power connector
		1 x Clear CMOS jumper
		64 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI2.0, WfM2.0, SM BIOS 2.7, ACPI
	BIOS features	4.0a, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3, My
		Favorites, Quick Note, Last Modified log, F12 PrintScreen Function, F3 Shortcut
		function and ASUS DRAM SPD(Serial Presence Detect) memory information
	Manageability	Wfm 2.0, DMI 2.0, WOL by PME, PXE
		Drivers
	Support DVD	ASUS utilities
		EZ Update
		Anti-virus software (OEM version)
	Form factor	mATX form factor: 9.2 in. x 8.1 in. (23.3 cm x 20.6 cm)

Specifications are subject to change without notice.

viii

Product introduction

1

1.1Before 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.

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.

SB_PWR
B85M-GAMER
ON	OFF
Standby Power	Powered Off

B85M-GAMER Onboard LED

ASUS B85M-GAMER

1-1

1.2Motherboard overview

Before you install the motherboard, study the configuration of your chassis to ensure that the motherboard fits.

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

1.2.1Placement 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.

1.2.2Screw 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

B85M-GAMER

1-2

Chapter 1: Product introduction

1.2.3Motherboard layout

1

2

3

1

4

20.6cm(8.1in)

KBMS
HDMI	EATX12V
ASM
1442
<![if ! IE]> <![endif]>VGA
USB3_56
LAN_USB34
	LANGuard
AUDIO	CHA_FAN

CPU_FAN

DIGI +VRM

LGA1150

BATTERY

B85M-GAMER

PCIEX16

<![if ! IE]> <![endif]>-pin module)

<![if ! IE]> <![endif]>-pin module)

<![if ! IE]> <![endif]>-pin module)

<![if ! IE]> <![endif]>-pin module)

<![if ! IE]> <![endif]>EATXPWR

<![if ! IE]> <![endif]>DDR3 DIMM A1 (64bit,240

<![if ! IE]> <![endif]>DDR3 DIMM A2 (64bit,240

<![if ! IE]> <![endif]>DDR3 DIMM B1 (64bit,240

<![if ! IE]> <![endif]>DDR3 DIMM B2 (64bit,240

<![if ! IE]> <![endif]>23.3cm(9.2in)

<![if ! IE]> <![endif]>4 SATA3G 2

<![if ! IE]> <![endif]>3 SATA3G 1

<![if ! IE]> <![endif]>SATA6G

<![if ! IE]> <![endif]>SATA6G

<![if ! IE]> <![endif]>SATA6G 2

<![if ! IE]> <![endif]>SATA6G 1

Intel

I218V

64Mb BIOS

PCIEX1_1

SUPREMEFX	Super	Intel	®
ALC
1150	I/O	B85

PCIEX1_2

SB_PWR

AAFP	COM	USB910	USB1112	USB3_12	PANEL
					CLRTC

13

12

11

10

9

8

2

5

6

7

1.2.4Layout contents

Connectors/Jumpers/Slots/LED		Page
1.	CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)	1-15
2.	EATX power connectors (24-pin EATXPWR, 8-pin EATX12V)	1-16
3.	Intel® LGA1150 CPU socket	1-4
4.	DDR3 DIMM slots	1-7
5.	Intel® B85 Serial ATA 3.0 Gb/s connectors (7-pin SATA3G_1/2 [black])	1-19
6.	Intel® B85 Serial ATA 6.0 Gb/s connectors (7-pin SATA6G_1/2/3/4 [gray])	1-19
7.	Standby Power LED (SB_PWR)	1-1
8.	System panel connector (20-8 pin PANEL)	1-20
9.	Clear RTC RAM (3-pin CLRTC)	1-12
10.	USB 3.0 connectors (20-1 pin USB3_12)	1-17
11.	USB 2.0 connectors (10-1 pin USB910, USB1112)	1-18
12.	Serial port connectors (10-1 pin COM)	1-15
13.	Front panel audio connector (10-1 pin AAFP)	1-17

ASUS B85M-GAMER

1-3

1.3Central Processing Unit (CPU)

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

B85M-GAMER

B85M-GAMER CPU socket LGA1150

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.

•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.

1-4	Chapter 1: Product introduction

1.3.1Installing the CPU

1

A

B

2

3

4	C	5
	A

ASUS B85M-GAMER

1-5

1.3.2CPU 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 A 2

B

B

A

3

4

1-6	Chapter 1: Product introduction

To uninstall the CPU heatsink and fan assembly

1

2

A

B B

A

1.4System memory

1.4.1Overview

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 1.65 V is recommended to protect the CPU.

<![if ! IE]>

<![endif]>DIMM_A1 DIMM_A2

<![if ! IE]>

<![endif]>DIMM_B1 DIMM_B2

B85M-GAMER

B85M-GAMER 240-pin DDR3 DIMM sockets

ASUS B85M-GAMER

1-7

1.4.2Memory configurations

You may install 1 GB, 2 GB, 4 GB, and 8 GB unbuffered non-ECC DDR3 DIMMs into the DIMM sockets. You can refer to the recommended memory population below.

	Combination	DIMM_A1	DIMM_A2	DIMM_B1	DIMM_B2
	Recommended
	1		SS
	2				SS
	3		SS		SS
	4		DS
	5				DS
	6		DS		DS
	7	DS	DS	DS	DS
		SS: Single-sided memory		DS: Double-sided memory

•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 configuration. Any excess memory from the higher-sized channel is then mapped for single-channel operation.

•Due to Intel® chipset limitation, DDR3 1600 MHz and higher memory modules on XMP mode will run at the maximum transfer rate of DDR3 1600 MHz.

•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 3 GB system memory if you are using a 32-bit Windows® OS.

-Install a 64-bit Windows® OS if you want to install 4GB or more on the motherboard.

-For more details, refer to the Microsoft® support site at http://support.microsoft. com/kb/929605/en-us.

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

1-8	Chapter 1: Product introduction

• 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 efficient memory cooling system to support a full memory load (4 DIMMs).

•Visit the ASUS website at www.asus.com for the latest QVL.

1.4.3Installing a DIMM

1

2

3

To remove a DIMM

B A

ASUS B85M-GAMER

1-9

1.5Expansion 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.

1.5.1Installing 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 firmly 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.

1.5.2Configuring an expansion card

After installing the expansion card, configure 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, conflicts will arise between the two PCI groups, making the system unstable and the card inoperable.

1-10	Chapter 1: Product introduction

1.5.4PCI Express 2.0 x1 slots

This motherboard supports PCI Express x1 network cards, SCSI cards, and other cards that comply with the PCI Express specifications.

1.5.5PCI Express 3.0/2.0 x16 slot

This motherboard supports PCI Express x16 graphic card complying with the PCI Express specifications.

IRQ assignments for this motherboard

	A	B	C	D	E	F	G	H
I.G.D.	Shared	–	–	–	–	–	–	–
PCIe x16	Shared	–	–	–	–	–	–	–
PCIe x1_1	Shared	–	–	–	–	–	–	–
PCIe x1_2	–	Shared	–	–	–	–	–	–
Intel SATA Controller	–	–	–	Shared	–	–	–	–
Intel LAN	–	–	–	–	Shared	–	–	–
Intel xHCI	–	–	–	–	–	Shared	–	–
Intel EHCI 1	–	–	–	–	–	–	–	Shared
Intel EHCI 2	Shared	–	–	–	–	–	–	–
HD Audio	–	–	–	–	–	–	Shared	–

ASUS B85M-GAMER

1-11

1.6Jumpers

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.

B85M-GAMER	CLRTC
1	2	2	3
Normal		Clear RTC
(Default)

B85M-GAMER Clear RTC RAM

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 <Del> key during the boot process and enter BIOS setup to reenter 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.

1-12	Chapter 1: Product introduction

1.7Connectors

1.7.1Rear panel connectors

1										2			3			4

10

9

8

7

6

5

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

2.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	10 Mbps connection
	Orange		Linked	ORANGE	100 Mbps connection
	Orange		Data activity	GREEN	1 Gbps connection
	(Blinking)
	Orange (Blinking		Ready to wake
	then steady)		up from S5 mode

Activity Link Speed

LED LED

LAN port

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

4.Line Out port (lime). This port connects to a headphone or a speaker. In the 2.1, 4.1, 5.1, and 7.1-channel configurations, the function of this port becomes Front Speaker

Out.

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

•Refer to the audio configuration table for the function of the audio ports in 2.1, 4.1, 5.1 or 7.1-channel configuration.

•For 8-channel speaker, you may refer to the 7.1-channel configuration.

ASUS B85M-GAMER

1-13

Audio 2.1, 4.1, 5.1 or 7.1-channel configuration

	Port	Headset	4.1-channel	5.1-channel	7.1-channel
		2.1-channel
	Light Blue (Rear
		Line In	Rear Speaker Out	Rear Speaker Out	Rear Speaker Out
	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

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 5 and 6. 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.HDMI port. This port is for a High-Definition Multimedia Interface (HDMI), and is HDCP compliant allowing playback of HD DVD, Blu-ray, and other protected content.

10.PS/2 keyboard port (purple). This port is for a PS/2 keyboard.

1-14	Chapter 1: Product introduction

1.7.2Internal connectors

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

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.

CPU_FAN

<![if ! IE]>

<![endif]>CPU FAN PWM

<![if ! IE]>

<![endif]>CPU FAN IN

<![if ! IE]>

<![endif]>CPU FAN PWR

<![if ! IE]>

<![endif]>GND

CHA_FAN

B85M-GAMER

GND

CHA FAN PWR

CHA FAN IN +5V

B85M-GAMER Fan connectors

Do not forget to connect the fan cables to the fan connectors. Insufficient air flow 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 1 A (12 W) fan power.

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

2.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.

COM

<![if ! IE]>

<![endif]>RXDDTRDSRCTS

PIN 1

<![if ! IE]>

<![endif]>DCDTXDGNDRTSRI

B85M-GAMER

B85M-GAMER Serial port connector

The COM module is purchased separately.

ASUS B85M-GAMER

1-15

3.EATX power connectors (24-pin EATXPWR, 8-pin EATX12V)

These connectors are for ATX power supply plugs. The power supply plugs are designed to fit these connectors in only one orientation. Find the proper orientation and push down firmly until the connectors completely fit.

A

B

B85M-GAMER

		A		B
	EATX12V		EATXPWR
		PIN 1	+3 Volts	GND
	+12V DC	GND
			+12 Volts	+5 Volts
	+12V DC	GND
			+12 Volts	+5 Volts
	+12V DC	GND
			+5V Standby	+5 Volts
	+12V DC	GND
			Power OK	-5 Volts
			GND	GND
			+5 Volts	GND
			GND	GND
			+5 Volts	PSON#
			GND	GND
			+3 Volts	-12 Volts
			+3 Volts	+3 Volts
			PIN 1

B85M-GAMER ATX power connectors

•For a fully configured system, we recommend that you use a power supply unit (PSU) that complies with ATX 12 V Specification 2.0 (or later version) and provides a minimum power of 350 W.

•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 configuring 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.

1-16	Chapter 1: Product introduction