ASUS B85M-G User Manual

B85M-G

Motherboard

E8146

First Edition V1

May 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, 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-G specifications summary..............................................................................	vi

Product introduction

1.1	Before you proceed....................................................................................	1-1
1.2	Motherboard overview...............................................................................	1-1
1.3	Central Processing Unit (CPU)..................................................................	1-3
1.4	System memory..........................................................................................	1-7
1.5	Expansion slots..........................................................................................	1-9
1.6	Jumpers.....................................................................................................	1-10
1.7	Connectors................................................................................................	1-12
1.8	Onboard LEDs...........................................................................................	1-20
1.9	Software support......................................................................................	1-21

BIOS information

2.1	Managing and updating your BIOS...........................................................	2-1
2.2	BIOS setup program...................................................................................	2-6
2.3	My Favorites................................................................................................	2-9
2.4	Main menu.................................................................................................	2-10
2.5	Ai Tweaker menu......................................................................................	2-12
2.6	Advanced menu........................................................................................	2-23
2.7	Monitor menu............................................................................................	2-32
2.8	Boot menu.................................................................................................	2-35
2.9	Tools menu................................................................................................	2-41
2.10	Exit menu...................................................................................................	2-42

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 fo 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 (+).

Package contents

Check your motherboard package for the following items.

Motherboard	ASUS B85M-G 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-G specifications summary

CPU

Chipset

Memory

Graphics

Expansion slots

Storage

LGA1150 socket for Intel® 4th Generation CoreTM i7/ i5 / i3, Pentium®, Celeron® Processors

* Refer to www.asus.com for Intel® CPU support list.

Intel® B85 Express Chipset

4 x DIMM, max. 32GB, DDR3 1600 / 1333 / 1066 MHz, non-ECC, unbuffered memory

Dual-channel memory architecture

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

**Due to Intel® chipset limitation, the 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® 32-bit operating 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.

Integrated graphics processor

Multi-VGA output support: D-Sub, DVI, HDMI ports

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

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

-Supports HDMI with max. resolution of 4096 x 2160 @24Hz / 2560 x 1600 @60Hz

Maximum UMA memory: 1 GB

1 x PCI Express 3.0/2.0 x16 slot

2 x PCI Express 2.0 x1 slots

Intel® B85 Express Chipset:

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

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

(continued on the next page)

vi

B85M-G specifications summary

LAN

Audio

USB

ASUS unique features

Rear panel I/O ports

Realtek 8111G Gigabit LAN controller

8-channel Realtek® ALC887-VD2 High Definition Audio CODEC

-Supports multi-streaming

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

4 x USB 3.0 ports (2 ports at midboard, 2 ports at back panel) 8 x USB 2.0 ports (4 ports at midboard, 4 ports at back panel)

ASUS DIGI+ VRM:

-ASUS DIGI+VRM: Digital Power Design for the CPU

-ASUS 3 Phase Power Design

ASUS Exclusive Features:

-ASUS USB 3.0 Boost

-ASUS Network iControl

-ASUS GPU Boost

-ASUS EPU

-ASUS Ai Charger

-ASUS UEFI BIOS (EZ Mode)

ASUS Quiet Thermal Solution:

- ASUS Fan Xpert

ASUS EZ DIY:

-ASUS CrashFree BIOS 3

-ASUS EZ Flash 2

-ASUS MyLogo 2™

All Solid Capacitors

1 x PS/2 keyboard port (purple)

1 x PS/2 mouse port (green)

1 x DVI port

1 x D-Sub port

1 x HDMI port

1 x LAN (RJ-45) port

4 x USB 2.0/1.1 ports

2 x USB 3.0 ports

3 x Audio jacks

(continued on the next page)

vii

B85M-G specifications summary

Internal connectors

BIOS features

Manageability

Support DVD

Form factor

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

4 x SATA 6.0 Gb/s connector

1 x Chassis Intrusion connector

1 x CLRTC jumper

1 x 4-pin CPU QFan connector

1 x 4-pin Chassis fan connector

1 x Front panel audio connector (AAFP)

1 x System panel connector

1 x Speaker connector

1 x LPT Header

1 x S/PDIF Out Header

1 x COM Header

1 x 24-pin ATX power connector

1 x 4-pin ATX 12V power connector

64Mb Flash ROM, EFI BIOS, PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, ACPI v2.0a, SLP 3.0, EUP-ready, Multi-language BIOS, ASUS EZ Flash 2, ASUS CrashFree BIOS 3

WOL by PME, WOR by PME, PXE

Drivers

ASUS utilities

EZ Update

Anti-virus software (OEM version)

uATX form factor: 9.2”x 7.6” (23.4cm x 19.3cm)

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.

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.

ASUS B85M-G

1-1

Place this side towards the rear

of the chassis

B85M-G

1.2.3Motherboard layout

KBMS

DVI_VGA

USB910

USB3_56

HDMI	ASM
	1442

LAN_USB34

AUDIO

RTL 8111G

Super

I/O

ALC 887

AAFP

1

2

3

3

4

5

19.3cm(7.6in)

		CPU_FAN
	DIGI
	+VRM
ATX12V
	LGA1150	A1 (64bit, 240-pin module)
USBPWRKB		DDR3 DIMM_
	CHA_FAN
	BATTERY
	PCIEX16
	B85M-G
PCIEX1_1
		Intel®
		B85
PCIEX1_2
	SPDIF_OUT	USBPWF
COM	CHASSIS	SPEAKER
		LPT USB1112 USB1314
		F_PANEL

	240-pin module)	240-pin module)	240-pin module)
	(64bit,	(64bit,	(64bit,
	DDR3 DIMM A2	DDR3 DIMM B1	DDR3 DIMM B2		1
				12	23.4cm(9.2in)
				EATXPWR
				USB3_	6
				SATA6G 1	7
			64Mb	2
			BIOS		8
				SATA6G
			SB_PWR
				SATA6G 3
			CLRTC	SATA6G_4	9
	SATA3G_1			SATA3G_2

19

18

17

16

15

14

13

12

11

10

1-2	Chapter 1: Product introduction

1.2.4Layout contents

Connectors/Jumpers/Slots/LED		Page
1.	ATX power connectors (24-pin EATXPWR, 4-pin ATX12V)	1-14
2.	Keyboard and USB device wakeup (KB_USBPWB)	1-11
3.	CPU and chassis fan connectors (4-pin CPU_FAN, 4-pin CHA_FAN)	1-16
4.	Intel® LGA1150 CPU socket	1-3
5.	DDR3 DIMM slots	1-7
6.	USB 3.0 connector (20-1 pin USB3_12)	1-18
7.	Onboard LED (SB_PWR)	1-20
8.	Intel® B85 Serial ATA 6.0Gb/s connectors (7-pin SATA6G_1~4 [yellow])	1-17
9.	Clear RTC RAM (3-pin CLRTC)	1-10
10.	Intel® B85 Serial ATA 3.0Gb/s connectors (7-pin SATA3G_1~2 [black])	1-17
11.	Speaker connector (4-pin SPEAKER)	1-16
12.	System panel connector (10-1 pin F_PANEL)	1-19
13.	USB 2.0 connectors (10-1 pin USB1112, USB1314)	1-18
14.	USB device wake-up (USBPWF)	1-11
15.	LPT connector (26-1 pin LPT)	1-14
16.	Chassis intrusion connector (4-1 pin CHASSIS)	1-20
17.	Serial port connectors (10-1 pin COM)	1-15
18.	Front panel audio connector (10-1 pin AAFP)	1-15
19.	Digital audio connector (4-1 pin SPDIF_OUT)	1-19

1.3Central 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.

B85M-G

B85M-G CPU socket LGA1150

ASUS B85M-G

1-3

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.

1.3.1Installing the CPU

1

A

B

2

3

1-4	Chapter 1: Product introduction

4 C 5

A

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.

ASUS B85M-G

1-5

To install the CPU heatsink and fan assembly

1 A 2

B

B

A

3

4

To uninstall the CPU heatsink and fan assembly

1

2

A

B

B

A

1-6	Chapter 1: Product introduction

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 has the same physical dimensions as a DDR2 DIMM but is notched differently to prevent installation on a DDR2 DIMM socket. DDR3 modules are developed for better performance with less power consumption. The figure illustrates the location of the DDR3 DIMM sockets:

DIMM_A1 DIMM_A2

DIMM_B1 DIMM_B2

Channel Sockets

Channel A DIMM_A1 & DIMM_A2

Channel B DIMM_B1 & DIMM_B2

B85M-G

B85M-G 240-pin DDR3 DIMM sockets

1.4.2Memory configurations

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

•Due to Intel® chipset limitation, 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® OS.

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

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

•The maximum 32GB memory capacity can be supported with 8GB or above DIMMs. ASUS will update the memory QVL once the DIMMs are available in the market.

ASUS B85M-G

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. Under the default state, some memory modules for overclocking may operate at a lower frequency than the vendor-marked value. To operate at the vendor-marked

or at a higher frequency, refer to section 2.5 Ai Tweaker menu for manual memory frequency adjustment.

•For system stability, use a more efficient memory cooling system to support a full memory load (4 DIMMs) or overclocking condition.

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

1.4.3Installing 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.

2

DIMM notch

1

Unlocked retaining clip

DIMM slot key

A DIMM is keyed with a notch so that it fits in only one direction. DO NOT force a DIMM into a socket in the wrong direction to avoid damaging the DIMM.

3

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

in place and the DIMM is properly seated.

Locked Retaining Clip

1.4.4Removing 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	2
your fingers when pressing the
retaining clips. The DIMM might	1
get damaged when it flips out
with extra force.

2.Remove the DIMM from the socket.

DIMM notch

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.

ASUS B85M-G

1-9

1.5.3PCI 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.

1.5.4PCI Express 3.0/2.0 x16 slot

This motherboard supports PCI Express x16 network cards, SCSI cards, and other cards that comply with the PCI Express specifications.

IRQ assignments for this motherboard

LAN	A	B	C	D	E	F	G	H
	–	–	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	–	–

1.6Jumpers

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.

CLRTC

1	2	2	3
B85M-G
Normal		Clear RTC
(Default)

B85M-G 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.

1-10	Chapter 1: Product introduction

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.

2.Keyboard and USB device wake-up (KB_USBPWB)

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).

	KB_USBPWB
		3
	2	2
	1
B85M-G	+5V	+5VSB
		(Default)

B85M-G Keyboard and USB device wake up

• 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 condition or in sleep mode.

3. USB device wake-up (USBPWF)

This jumper allows you to enable or disable the USB device 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 USB keyboard or by clicking on the USB mouse. This feature requires an ATX power supply that can supply at least 1A on the +5VSB lead, and a corresponding setting in the BIOS.

USBPWF

B85M-G	1 2	2 3
	+5V	+5VSB
	(Default)

B85M-G USB device wake up

ASUS B85M-G

1-11

1.7Connectors

1.7.1Rear panel connectors

1		2									3		4					5

12

11

10

9

8

7

6

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	Ready to
(Blinking	wake up from
then steady)	S5 mode

Activity Link		Speed
LED			LED

LAN port

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 configurations, the function of this port becomes Front Speaker Out.

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

Refer to the audio configuration table for the function of the audio ports in 2, 4, 6, or 8- channel configuration.

1-12	Chapter 1: Product introduction

Audio 2, 4, 6, or 8-channel configuration

	Port	Headset	4-channel	6-channel	8-channel
		2-channel
	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 configure an 8-channel audio output:

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

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

9.USB 3.0 ports 5 and 6. These two 9-pin Universal Serial Bus (USB) ports are for USB 3.0 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.

•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 firmware for better compatibility.

10.USB 2.0 ports 9 and 10. These two 4-pin Universal Serial Bus (USB) ports are for USB 2.0/1.1 devices.

11.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.

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

-HDMI port: 300 MHz

-DVI port: 165 MHz

-VGA port: 180 MHz

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

ASUS B85M-G

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1.7.2Internal connectors

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

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.

	ATX12V		EATXPWR
	DC DC	+3 Volts		GND
	+12V +12V
		+12	Volts	+5 Volts
		+12	Volts	+5 Volts
		+5V Standby		+5 Volts
	PIN 1	Power OK		-5 Volts
			GND	GND
	GND GND
		+5 Volts		GND
			GND	GND
	B85M-G	+5 Volts		PSON#
			GND	GND
		+3	Volts	-12 Volts
		+3	Volts	+3 Volts
			PIN 1

B85M-G ATX power connectors

•We recommend that you use an ATX 12V Specification 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 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.

•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.

2.LPT connector (26-1 pin LPT)

The LPT (Line Printing Terminal) connector supports devices such as a printer. LPT standardizes as IEEE 1284, which is the parallel port interface on IBM PC-compatible computers.

LPT

SLCTPEBUSYACK#PD7PD6PD5PD4PD3PD2PD1PD0STB#

PIN 1

B85M-G

GNDGNDGNDGNDGNDGNDGNDGNDSLIN#INIT#ERR#AFD

B85M-G Parallel Port Connector

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3.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.

AGND NC SENSE1 RETUR	SENSE2 RETUR
AAFP
PIN 1	SENSESEND PORT2 L
PORT1 L PORT1 R PORT2 R
B85M-G
HD-audio-compliant
pin definition

AGND NC NC

NC

PIN 1

Line out_L

NC

Line out_R

MICPWR

MIC2

Legacy AC’97 compliant definition

B85M-G Front panel audio connector

•We recommend that you connect a high-definition front panel audio module to this

connector to avail of the motherboard’s high-definition audio capability.

•If you want to connect a high-definition 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 Configuration for details.

4.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

RXDDTRDSRCTS

PIN 1

DCDTXDGNDRTSRI

B85M-G

B85M-G Serial port (COM) connector

The COM module is purchased separately.

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