Asus H81-PLUS User Manual

Motherboard

H81-PLUS

ii

E8451
First Edition V1

July 2013

Copyright © 2013 ASUSTeK COMPUTER INC. All Rights Reserved.

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

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

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

OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OR CONDITIONS OF
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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
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Where the applicable license entitles you to the source code of such software and/or other additional data,
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In your request please provide the name, model number and version, as stated in the About Box of the
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the product and describing the problem (please DO NOT send large attachments such as source code
archives, etc. to this email address).

iii

Contents

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

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

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

H81-PLUS specications 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 ............................................................................

1-18

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

1-19

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 .........................................................................

2-24

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

iv

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.

•

•

•

•

•

•

•

•

•

•

•

•

v

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

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 (+).

vi

H81-PLUS specications summary

(continued on the next page)

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

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® H81 Express Chipset

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

buffered memory

Dual-channel memory architecture

Supports Intel® Extreme Memory Prole (XMP)

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

Please refer to the Memory QVL (Qualied Vendors List) for details.

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

Graphics VGA output support: RGB port

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

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

Insider

TM

Maximum shared memory of 1024 MB

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

2 x PCI Express x1 slots

3 x PCI slots

Storage Intel® H81 Express Chipset:

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

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

- Support Intel

®

Rapid Start Technology* and Intel® Smart Connect

Technology**

* Due to the limitation of the Intel® H81 chipset, Intel® Rapid Start Technology can

be congured only from the BIOS Setup Program.

** Intel® Rapid Start Technology and Intel® Smart Connect Technology will work

depending on the CPU installed.

Package contents

Check your motherboard package for the following items.

Motherboard ASUS H81-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.

vii

H81-PLUS specications summary

Audio Realtek® ALC887 8-channel Audio CODEC

- Supports jack-detection, multi-streaming, front panel jack-restasking

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

audio output.

LAN

Realtek 8111G Gigabit LAN controller

USB Intel® H81 Express Chipset - supports ASUS USB 3.0 Boost

- 2 x USB 3.0/2.0 ports at mid-board for front panel support

Intel® H81 Express Chipset

- 8 x USB 2.0/1.1 ports (6 ports at midboard, 2 ports at back panel)

ASUS unique
features

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 DIGI+ VRM

- ASUS DIGI+ VRM: Digital Power Design for CPU

- ASUS 3 Phase Power Design

- ASUS CPU power utility

ASUS DRAM Fuse

- Enhanced DRAM overcurrent protection and short circuit damage
prevention

ASUS ESD Guards

- Ehanced ESD protection

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

- ASUS USB 3.0 Boost featuring speedy USB 3.0 transmission

- ASUS Ai Charger

- ASUS GPU Boost

- ASUS AI Suite 3

- ASUS Anti-surge

ASUS Quiet Thermal Solution:

- ASUS Fan Xpert

- ASUS Fanless Design: Stylish Heatsink solution

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)

viii

H81-PLUS specications summary

Rear panel I/O
ports

1 x PS/2 keyboard port (purple)

1 x PS/2 mouse port (green)

1 x RGB port

1 x LAN (RJ-45) port

2 x USB 3.0/2.0 ports (blue)

2 x USB 2.0/1.1 ports

1 x COM port

1 x LPT port

3 x Audio jacks support 8-channel audio output

Internal
connectors/
switches/
buttons

3 x USB 2.0/1.1 connectors support additional 6 USB 2.0 ports

2 x SATA 6.0 Gb/s connectors

2 x SATA 3.0 Gb/s connectors

1 x CLRTC jumper

1 x 4-pin CPU fan connector

1 x 4-pin Chassis fan connectors

1 x Front panel audio connector (AAFP)

1 x System panel connector

1 x S/PDIF Header

1 x 24-pin EATX power connector

1 x 4-pin EATX 12V power connector

BIOS features 64 Mb Flash ROM, UEFI AMI BIOS, PnP, DMI v2.0, WfM2.0, SM BIOS v2.7, 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 functions

Manageability

WfM 2.0, DMI 2.0, WOL by PME, PXE

Support DVD Drivers

ASUS utilities

EZ Update

Anti-virus software (OEM version)

Operating
System
Support

Windows® 8 / Windows® 7

Form factor

ATX form factor: 12.0”x 7.4” (30.5cm x 18.8cm)

Specications are subject to change without notice.

ASUS H81-PLUS

1-1

Product introduction

1

1.1 Before you proceed

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

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

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

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

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

• Before you install or remove any component, ensure that the ATX power supply is
switched off or the power cord is detached from the power supply. Failure to do so
may cause severe damage to the motherboard, peripherals, or components.

1.2 Motherboard overview

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

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.

1-2

Chapter 1: Product introduction

H81-PLUS

Place this side

towards the rear

of the chassis

1.2.3 Motherboard layout

H81-PLUS

PCIEX16_1

PCIEX1_1

PCIEX1_2

ASM
1083

PCI2

PCI1

PCI3

USB910 USB1112 USB1314

AAFP

EATXPWR

CPU_FAN

BATTERY

Super

I/O

RTL

ALC887

RTL 8111G

KBMS

64Mb
BIOS

SB_PWR

CLRTC

USBPWF

KB_USBPWB

18.8cm(7.4in)

Intel

®

H81

DDR3 DIMM_A1 (64bit, 240-pin module)

DDR3 DIMM_B1 (64bit, 240-pin module)

SATA3G_2SATA3G_1

PANEL

SATA6G_2SATA6G_1

AUDIO

LAN_USB34

USB3_12

CHA_FAN

SPDIF_OUT

30.5cm(12.0in)

LGA1150

DIGI
+VRM

ASM
1083

ATX12V

VGA

LPT

COM

23 421 5

8129

10

11

13

6

3

7

8

14

ASUS H81-PLUS

1-3

1.2.4 Layout contents

Connectors/Jumpers/Slots/LED Page

1. Keyboard and USB device wakeup (KB_USBPWB) 1-12

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

3. ATX power connectors (24-pin EATXPWR, 4-pin ATX12V) 1-14

4. Intel® LGA1150 CPU socket 1-3

5. DDR3 DIMM slots 1-7

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

7. Intel® H81 Serial ATA 6.0Gb/s connector (7-pin SATA6G_1~2 [yellow]) 1-15

8. Intel® H81 Serial ATA 3.0Gb/s connector (7-pin SATA3G_1~2 [dark brown]) 1-16

9. System panel connector (20-8 pin F_PANEL) 1-17

10. USB device wake-up (USBPWF) 1-11

11. USB 2.0 connectors (10-1 pin USBUSB56, 910, USB1112) 1-17

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

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

14. Onboard LED (SB_PWR) 1-18

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.

H81-PLUS

H81-PLUS CPU socket LGA1150

1-4

Chapter 1: Product introduction

1.3.1 Installing the CPU

1

2

3

A

B

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.

ASUS H81-PLUS

1-5

A

B

C

5

4

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.

1-6

Chapter 1: Product introduction

3 4

A

B

B

A

To uninstall the CPU heatsink and fan assembly

2

1

To install the CPU heatsink and fan assembly

2

B

A

A

B

1

ASUS H81-PLUS

1-7

1.4 System memory

1.4.1 Overview

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

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

Channel Sockets

Channel A DIMM_A1

Channel B DIMM_B1

H81-PLUS

H81-PLUS 240-pin DDR3 DIMM sockets

DIMM_A1

DIMM_B1

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

®

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 512Mb (64MB) 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.
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 efcient memory cooling system to support a full

memory load (2 DIMMs) or overclocking condition.

• Visit the ASUS website at:

www.asus.com for the latest QVL.

1.4.3 Installing a DIMM

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

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

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

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

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

3. Firmly insert the DIMM into the
socket until the retaining clips snap
back in place and the DIMM is
properly seated.

1.4.4 Removing a DIMM

To remove a DIMM:

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

Unlocked retaining clip

1

DIMM notch

2

1

DIMM slot key

Locked Retaining Clip

3

ASUS H81-PLUS

1-9

2. Remove the DIMM from the socket.

Support the DIMM lightly with

your ngers when pressing the

retaining clips. The DIMM might

get damaged when it ips out

with extra force.

1.5 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.

DIMM notch

1

1

2

1-10

Chapter 1: Product introduction

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 slot

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

comply with the PCI Express specications.

1.5.5 PCI slots

The PCI slots support cards such as a LAN card, SCSI card, USB card, and other cards that

comply with PCI specications.

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.

IRQ assignments for this motherboard

H81-PLUS

H81-PLUS Clear RTC RAM

1 2 2 3

Normal

(Default)

Clear RTC

CLRTC

A B C D E F G H

LAN

– – shared – – – – –

PCIE x16

shared – – – – – – –

PCIE x1_1

shared – – – – – – –

PCIE x1_2

– shared – – – – – –

PCI_1

– – – shared – – – –

PCI_2

shared – – – – – – –

PCI_3

– shared – – – – – –

Intel PCH SATA Controller

– – – shared – – – –

HD Audio

– – – – – – shared –

USB2.0_1

– – – – – – – shared

USB2.0_2

– – – – shared – – –

USB3.0

– – – – – shared – –

ASUS H81-PLUS

1-11

• 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.

• 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.

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 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!

H81-PLUS

H81-PLUS USB device wake up

21

2 3

+5V

(Default)

+5VSB

USBPWF

2. USB device wake-up (USBPWF)

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).

1-12

Chapter 1: Product introduction

1.7 Connectors

1.7.1 Rear panel connectors

LAN port

Speed

LED

Activity Link

LED

4 53

68 7

2

10 9

1

11

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

2. Parallel port.

This 25-pin port connects a parallel printer, a scanner, or other 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

H81-PLUS

H81-PLUS Keyboard and USB device wake up

1 2

2 3

+5V

+5VSB

(Default)

KB_USBPWB

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

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

Activity/Link LED Speed LED
Status Description Status Description

Off No link OFF 10Mbps connection
Orange Linked ORANGE 100Mbps

connection
Orange (Blinking) Data activity GREEN 1Gbps connection
Orange (Blinking

then steady)

Ready to wake
up from S5 mode

ASUS H81-PLUS

1-13

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.

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

Port

Headset

2-channel

4-channel 6-channel 8-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

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

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 1 and 2

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

3.0 devices.

• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing Windows

®

operating system.

• 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.

• 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.

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

VGA-compatible devices..

10. Serial port. This 9-pin COM port is for pointing devices or other serial devices.

11. PS/2 keyboard port (purple).

This port is for a PS/2 keyboard.

To congure an 8-channel audio output:

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

output.

1-14

Chapter 1: Product introduction

•

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 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.

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

H81-PLUS

H81-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

ATX12V

PIN 1

+12V DC

+12V DC

GND

GND

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

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

The S/PDIF module is purchased separately.

H81-PLUS

H81-PLUS Digital audio connector

SPDIF_OUT

+5V

SPDIFOUT

GND