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, modied or altered, unless
such repair, modication 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 identication or explanation and to the
owners’ benet, without intent to infringe.
Recovering your system .............................................................................. 60
ASUS contact information ............................................................................ 64
4
Notices
ASUS Recycling/Takeback Services
ASUS recycling and takeback programs come from our commitment to the highest standards
for protecting our environment. We believe in providing solutions for you to be able to
responsibly recycle our products, batteries, other components, as well as the packaging
materials. Please go to http://csr.asus.com/english/Takeback.htm for the detailed recycling
information in different regions.
REACH
Complying with the REACH (Registration, Evaluation, Authorisation, and Restriction of
Chemicals) regulatory framework, we published the chemical substances in our products at
ASUS REACH website at http://csr.asus.com/english/REACH.htm
Federal Communications Commission Statement
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two
conditions:
• This device may not cause harmful interference; and
• This device must accept any interference received including interference that may cause
undesired operation.
This equipment has been tested and found to comply with the limits for a Class B digital
device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference in a residential installation. This
equipment generates, uses and can radiate radio frequency energy and, if not installed
and used in accordance with manufacturer’s instructions, may cause harmful interference
to radio communications. However, there is no guarantee that interference will not occur
in a particular installation. If this equipment does cause harmful interference to radio or
television reception, which can be determined by turning the equipment off and on, the user
is encouraged to try to correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment to an outlet on a circuit different from that to which the receiver is
connected.
• Consult the dealer or an experienced radio/TV technician for help.
The use of shielded cables for connection of the monitor to the graphics card is required
to assure compliance with FCC regulations. Changes or modications to this unit not
expressly approved by the party responsible for compliance could void the user’s authority
to operate this equipment.
CAUTION: Danger of explosion if battery is incorrectly replaced. Replace only with the
same or equivalent type recommended by the manufacturer. Dispose of used batteries
according to the manufacturer’s instructions.
Lithium-Ion Battery Warning
5
Avertissement relatif aux batteries Lithium-Ion
MISE EN GARDE: Danger d’explosion si la pile n’est pas remplacée correctement.
Remplacer uniquement avec une pile de type semblable ou équivalent, recommandée
par le fabricant. Mettez au rebut les batteries usagées conformément aux instructions
du fabricant.
IC: Canadian Compliance Statement
Complies with the Canadian ICES-003 Class B specications. This device complies with RSS
210 of Industry Canada. This Class B device meets all the requirements of the Canadian
interference-causing equipment regulations.
This device complies with Industry Canada license exempt RSS standard(s). Operation
is subject to the following two conditions: this device may not cause interference, and (2)
this device must accept any interference, including interference that may cause undesired
operation of the device.
Cut appareil numérique de la Classe B est conforme à la norme NMB-003 du Canada.
Cet appareil numérique de la Classe B respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.
Cet appareil est conforme aux normes CNR exemptes de licence d’Industrie Canada. Le
fonctionnement est soumis aux deux conditions suivantes.
(1) cet appareil ne doit par provoquer d’interférences et
(2) cet appareil doit accepter toute interférence, y compris celles susceptibles de provoquer
un fonctionnement non souhaité de l’appareil.
Canadian Department of Communications Statement
This digital apparatus does not exceed the Class B limits for radio noise emissions from
digital apparatus set out in the Radio Interference Regulations of the Canadian Department
of Communications.
This class B digital apparatus complies with Canadian ICES-003.
VCCI: Japan Compliance Statement
VCCI Class B Statement
KC: Korea Warning Statement
6
RF Equipment Notices
CE: European Community Compliance Statement
The equipment complies with the RF Exposure Requirement 1999/519/EC, Council
Recommendation of 12 July 1999 on the limitation of exposure of the general public to
electromagnetic elds (0–300 GHz). This wireless device complies with the R&TTE Directive.
Wireless Radio Use
This device is restricted to indoor use when operating in the 5.15 to 5.25 GHz frequency
band.
Exposure to Radio Frequency Energy
The radiated output power of the Wi-Fi technology is below the FCC radio frequency
exposure limits. Nevertheless, it is advised to use the wireless equipment in such a manner
that the potential for human contact during normal operation is minimized.
FCC Bluetooth Wireless Compliance
The antenna used with this transmitter must not be colocated or operated in conjunction with
any other antenna or transmitter subject to the conditions of the FCC Grant.
Bluetooth Industry Canada Statement
This Class B device meets all requirements of the Canadian interference-causing equipment
regulations.
Cet appareil numérique de la Class B respecte toutes les exigences du Règlement sur le
matériel brouilleur du Canada.
BSMI: Taiwan Wireless Statement
Japan RF Equipment Statement
KC (RF Equipment)
7
Safety information
Disconnect the AC power and peripherals before cleaning. Wipe the Desktop PC using a
clean cellulose sponge or chamois cloth dampened with solution of nonabrasive detergent
and a few drops of warm water then remove any extra moisture with a dry cloth.
• DO NOT place on uneven or unstable work surfaces. Seek servicing if the casing has
been damaged.
•
DO NOT expose to dirty or dusty environments. DO NOT operate during a gas leak.
•
DO NOT place or drop objects on top and do not shove any foreign objects into the
Desktop PC.
•
DO NOT expose to strong magnetic or electrical elds.
•
DO NOT expose to or use near liquids, rain, or moisture. DO NOT use the modem during
electrical storms.
• Battery safety warning:
contacts. DO NOT disassemble the battery.
• Use this product in environments with ambient temperatures between 0˚C (32F)and 35˚C
(95F).
•
DO NOT cover the vents on the Desktop PC to prevent the system from getting
overheated.
•
DO NOT use damaged power cords, accessories, or other peripherals.
•
To prevent electrical shock hazard, disconnect the power cable from the electrical outlet
before relocating the system.
•
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 qualied service
technician or your retailer.
DO NOT throw the battery in re. DO NOT short circuit the
8
Conventions used in this guide
To ensure that you perform certain tasks properly, take note of the following symbols used
throughout this manual.
DANGER/WARNING: Information to prevent injury to yourself when trying
to complete a task.
CAUTION: Information to prevent damage to the components when trying
to complete a task.
IMPORTANT: Instructions that you MUST follow to complete a task.
NOTE: Tips and additional information to help you complete a task.
Where to nd more information
Refer to the following sources for additional information and for product and software
updates.
ASUS websites
The ASUS website provides updated information on ASUS hardware and software
products. Refer to the ASUS website www.asus.com.
ASUS Local Technical Support
Visit ASUS website at
local Technical Support Engineer.
http://support.asus.com/contact for the contact information of
• The user manual is located in the following folder in your Desktop PC:
• C:\Program Files(X86)\ASUS\eManual
9
Installation Guide
Package contents
ASUS Essentio Desktop PC
Mouse x1
Installation Guide x1
• If any of the above items are damaged or missing, contact your retailer.
• The illustrated items above are for reference only. Actual product specications may vary
with different models.
Keyboard x1
Power cord x1DVD/SDVD/RDVD x1
(optional)
Warranty card x1Antenna x 1 (optional)
Antennas x 2 (optional)
10
Chapter 1
Getting started
Welcome!
Thank you for purchasing the ASUS Essentio M51AC Desktop PC!
The ASUS Essentio M51AC Desktop PC provides cutting-edge performance, uncompromised
reliability, and user-centric utilities. All these values are encapsulated in a stunningly futuristic
and stylish system casing.
Read the ASUS Warranty Card before setting up your ASUS Desktop PC.
Getting to know your computer
Illustrations are for reference only. The ports and their locations, and the chassis color vary
with different models.
Front panel
ASUS M51AC11
ENGLISH
ENGLISH
USB 3.0 ports. These Universal Serial Bus 3.0 (USB 3.0) ports connect to USB
3.0 devices such as a mouse, printer, scanner, camera, PDA, and others.
• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing Windows
operating system.
• Due to USB 3.0 controller limitation, USB 3.0 devices can only be used under
Windows® OS environment and after the USB 3.0 driver installation.
• USB 3.0 devices can only be used as data storage only.
• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for
faster and better performance for your USB 3.0 devices.
®
USB 2.0 ports. These Universal Serial Bus 2.0 (USB 2.0) ports connect to USB
2.0 devices such as a mouse, printer, scanner, camera, PDA, and others.
Microphone port. This port connects to a microphone.
Headphone port. This port connects to a headphone or speaker. Supported by
ASUS Audio Wizard.
Power button. Press this button to turn on your computer.
Card readers’ cover. Open this cover to display the card reader slots.
Optical disk drive bay. There is an optical disk drive in this bay.
Optical disk drive bay (empty). Allows you to install an additional optical disk
drive in this bay.
CompactFlash® / Microdrive™ card slot. Insert a CompactFlash® / Microdrive™
card into this slot.
Secure Digital™ / MultiMediaCard slot. Insert a Secure Digital™ /
MultiMediaCard card into this slot.
Memory Stick™ / Memory Stick Pro™ card slot. Insert a Memory Stick™ /
Memory Stick Pro™ card into this slot.
12Chapter 1: Getting started
ENGLISH
Rear panel
Power connector. Plug the power cord to this connector.
ENGLISH
RATING: 115Vac/220-230Vac, 7A/4A, 60/50Hz.
Power switch (on selected models only). Switch to turn ON/OFF the power
supply to your computer.
USB 2.0 ports. These Universal Serial Bus 2.0 (USB 2.0) ports connect to USB
2.0 devices such as a mouse, printer, scanner, camera, PDA, and others.
DisplayPort. This port connects a display monitor or a home-theater system.
DVI-D port. This port is for any DVI-D compatible device and is HDCP compliant
allowing playback of HD DVD, Blu-ray, and other protected content.
ASUS M51AC13
ENGLISH
ENGLISH
USB 3.0 ports. These Universal Serial Bus 3.0 (USB 3.0) ports connect to USB
3.0 devices such as a mouse, printer, scanner, camera, PDA, and others.
• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing Windows
operating system.
• Due to USB 3.0 controller limitation, USB 3.0 devices can only be used under
Windows® OS environment and after the USB 3.0 driver installation.
• USB 3.0 devices can only be used as data storage only.
• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for
faster and better performance for your USB 3.0 devices.
®
Side Speaker Out port (gray). This port connects to the side speakers in an
8-channel audio conguration.
Rear Speaker Out port (black). This port connects to the rear speakers in a 4, 6,
and 8-channel audio conguration.
Center/Subwoofer port (orange). This port connects to the center/subwoofer
speakers.
Microphone port (pink). This port connects to a microphone.
Line Out port (lime). This port connects to a headphone or speaker. In a 4.1, 5.1,
or 7.1-channel conguration, the function of this port becomes Front Speaker Out.
Supported by ASUS Audio Wizard.
Line In port (light blue). This port connects to a tape, CD, DVD player, or other
audio sources.
Refer to the audio conguration table below for the function of the audio ports in a 2.1,
4.1, 5.1, or 7.1-channel conguration.
Audio 2.1, 4.1, 5.1, or 7.1-channel conguration
Port
Light BlueLine InLine InLine InLine In
LimeLine OutFront Speaker OutFront Speaker OutFront Speaker Out
PinkMic InMic InMic InMic In
Orange––Center/SubwooferCenter/Subwoofer
Black–Rear Speaker OutRear Speaker OutRear Speaker Out
Gray–––Side Speaker Out
14Chapter 1: Getting started
Headset
2.1-channel
4.1-channel5.1-channel7.1-channel
ENGLISH
Expansion slot bracket. Remove the expansion slot bracket when installing an
expansion card.
ASUS WLAN Card (on selected models only). This optional WLAN card allows
your computer to connect to a wireless network.
ASUS Graphics Card (on selected models only). The display output ports on
this optional ASUS Graphics Card may vary with different models.
LAN (RJ-45) port. This port allows Gigabit connection to a Local Area Network
(LAN) through a network hub.
LAN port LED indications
LED
LAN port
SPEED
LED
ACT/LINK
Activity/Link LED Speed LED
StatusDescriptionStatusDescription
OFFNo linkOFF10Mbps connection
ORANGELinkedORANGE100Mbps connection
BLINKINGData activityGREEN1Gbps connection
USB 3.0 ports, support ASUS USB 3.0 Boost UASP Mode. These Universal
Serial Bus 3.0 (USB 3.0) ports connect to USB 3.0 devices such as a mouse,
printer, scanner, camera, PDA, and others.
• The USB 3.0 ports only support Windows® 7 or later versions. UASP standard only
supports Windows® 8.
• DO NOT connect a keyboard / mouse to any USB 3.0 port when installing Windows
operating system.
• Due to USB 3.0 controller limitation, USB 3.0 devices can only be used under
Windows® OS environment and after the USB 3.0 driver installation.
• USB 3.0 devices can only be used as data storage only.
• We strongly recommend that you connect USB 3.0 devices to USB 3.0 ports for
faster and better performance for your USB 3.0 devices.
®
ENGLISH
VGA port. This port is for VGA-compatible devices such as a VGA monitor.
Optical S/PDIF_OUT port. This port connects to an external audio output device
via an optical S/PDIF cable.
ASUS M51AC15
ENGLISH
ENGLISH
PS/2 Keyboard / Mouse Combo port (purple). This port is for a PS/2 keyboard
or mouse.
HDMI port. This port is for a High-Denition Multimedia Interface (HDMI)
connector, and is HDCP compliant allowing playback of HD DVD, Blu-ray, and
other protected content.
Air vents. These vents allow air ventilation.
DO NOT block the air vents on the chassis. Always provide proper ventilation for your
computer.
Setting up your computer
This section guides you through connecting the main hardware devices, such as the external
monitor, keyboard, mouse, and power cord, to your computer.
Connecting an external monitor
Using the ASUS Graphics Card (on selected models only)
Connect your monitor to the display output port on the discrete ASUS Graphics Card.
To connect an external monitor using the ASUS Graphics Card:
1. Connect a monitor to a display output port on the ASUS Graphics Card.
2. Plug the monitor to a power source.
The display output ports on the ASUS Graphics Card may vary with different models.
16Chapter 1: Getting started
ENGLISH
Using the onboard display output ports
Connect your monitor to the onboard display output port.
To connect an external monitor using the onboard display output ports:
1. Connect a VGA monitor to the VGA port, or a DVI-D monitor to the DVI-D port, or an
HDMI monitor to the HDMI port on the rear panel of your computer.
2. Plug the monitor to a power source.
ENGLISH
• If your computer comes with an ASUS Graphics Card, the graphics card is set as the
primary display device in the BIOS. Hence, connect your monitor to a display output port
on the graphics card.
• To connect multiple external monitors to your computer, refer to
external displays in Chapter 3 of this user manual for details.
ASUS M51AC17
Connecting multiple
ENGLISH
ENGLISH
`
Connecting a USB keyboard and a USB mouse
Connect a USB keyboard and a USB mouse to the USB ports on the rear panel of your
computer.
Connect your USB keyboard and USB mouse to the USB 2.0 ports.
Connecting the power cord
Connect one end of the power cord to the power connector on the rear panel of your
computer and the other end to a power source.
18Chapter 1: Getting started
ENGLISH
Turning your computer ON
This section describes how to turn on your computer after setting up your computer.
To turn your computer ON:
1. Turn on the power switch.
2. Turn your monitor ON.
3. Press the power button on your computer.
Power button
4. Wait until the operating system loads automatically.
ENGLISH
For details on shutting down your Desktop PC, refer to the section Turning your Desktop
PC OFF in Chapter 2.
ASUS M51AC19
ENGLISH
20Chapter 1: Getting started
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