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Desktop PC
D642MF / D6421SFF
User Guide

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Table of Contents
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Summary of Contents for Asus D642MF

  • Page 1 Desktop PC D642MF / D6421SFF User Guide...
  • Page 2 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.
  • Page 3: Table Of Contents

    Wired connection ..................35 Chapter 5 Troubleshooting Troubleshooting ................... 37 Appendix Windows 10 User Manual ® Starting for the first time ................47 Using the Windows 10 UI ................48 ® Keyboard shortcuts ..................52 ASUS contact information ASUS contact information ................54...
  • Page 4: Notices

    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.
  • Page 5 Avertissement relatif aux batteries Lithium ATTENTION ! Danger d’explosion si la batterie n’est pas correctement remplacée. Remplacer uniquement avec une batterie de type semblable ou équivalent, recommandée par le fabricant. Jeter les batteries usagées conformément aux instructions du fabricant. Compliance Statement of Innovation, Science and Economic Development Canada (ISED) This device complies with Innovation, Science, and Economic Development Canada licence exempt RSS standard(s).
  • Page 6 : (1) cet appareil ne doit pas créer d’interférences et (2) cet appareil doit tolérer tout type d’interférences, 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.
  • Page 7 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.
  • Page 8 Optical Drive Safety Information Laser Safety Information CD-ROM Drive Safety Warning CLASS 1 LASER PRODUCT WARNING! To prevent exposure to the optical drive’s laser, do not attempt to disassemble or repair the optical drive by yourself. For your safety, contact a professional technician for assistance.
  • Page 9: Safety Information

    All ASUS products with the ENERGY STAR logo comply with the ENERGY STAR standard, and the power management feature is enabled by default. The monitor and computer are automatically set to sleep after 10 and 30 minutes of user inactivity.
  • Page 10: Conventions Used In This Guide

    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 https://www.asus.com/support/contact for the contact information...
  • Page 11: Package Contents

    Package contents ASUS Desktop PC Keyboard x1 (optional) Mouse x1 (optional) D642MF / D6421SFF ASUS mouse pad x 1 Power cord x1 Recovery DVD x1 (Optional) (Optional) Warranty card x1 Installation Guide x1 • If any of the above items is damaged or missing, contact your retailer.
  • Page 13: Chapter 1 Getting Started

    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. • The Desktop PC does not support Windows 7 operating system. ASUS is not ®...
  • Page 14 Illustrations are for reference only. The ports and their locations, the chassis and chassis color vary with different models. Front a b c d Power button. Press this button to turn on your computer. HDD LED. This LED shows the status of the hard disk drive. Optical disk drive bay.
  • Page 15 • We strongly recommend that you connect USB 3.1 Gen1 devices to USB 3.1 Gen1 ports for faster and better performance for your USB 3.1 Gen1 devices. Headphone port. This port connects to a headphone or speaker. Supported by ASUS Audio Wizard. Microphone port. This port connects to a microphone. ASUS Desktop PC...
  • Page 16 Rear Power connector. Plug the power cord to this connector. PS/2 mouse port. This port is for a PS/2 mouse. PS/2 keyboard port. This port is for a PS/2 keyboard. 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.
  • Page 17 Line Out port (lime). This port connects to a headphone or speaker. In a 4.1, 5.1, or 7.1-channel configuration, 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.
  • Page 18 ACT/LINK LED LAN port LED indications SPEED LED Activity/Link LED Speed LED Status Description Status Description No link 10Mbps connection ORANGE Linked ORANGE 100Mbps connection BLINKING Data activity GREEN 1Gbps connection LAN port VGA port. This port is for VGA-compatible devices such as a VGA monitor. Air vents.
  • Page 19: Setting Up 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: Connect a monitor to a display output port on the ASUS Graphics Card.
  • Page 20 Plug the monitor to a power source. • 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.
  • Page 21 Connect a USB keyboard and a USB mouse to the USB ports on the rear panel of your computer. 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. ASUS Desktop PC...
  • Page 22: Connecting Multiple External Displays

    Connecting multiple external displays Your desktop PC may come with VGA, HDMI, or DisplayPort ports and allows you to connect multiple external displays. Setting up multiple displays When using multiple monitors, you are allowed to set display modes. You can use the additional monitor as a duplicate of your main display, or as an extension to enlarge your Windows desktop.
  • Page 23: Turning Your Computer On

    This section describes how to turn on your computer after setting up your computer. Turning your computer ON To turn your computer ON: Turn your monitor ON. Press the power button on your computer. Power button Wait until the operating system loads automatically. ASUS Desktop PC...
  • Page 24 Chapter 1: Getting started...
  • Page 25: Chapter 2 Connecting Devices To Your Computer

    You can enable or disable the front and rear USB 2.0 and USB 3.1 Gen1 ports individually from the BIOS Setup. Refer to the Configuring the USB ports using the BIOS section in Chapter 3 of this user manual for details. Front panel Rear panel ASUS Desktop PC...
  • Page 26: Connecting Microphone And Speakers

    Connecting microphone and speakers This desktop PC comes with microphone ports and speaker ports on both the front and rear panels. The audio I/O ports located on the rear panel allow you to connect 2.1-channel, 4.1-channel, 5.1-channel, and 7.1-channel stereo speakers. •...
  • Page 27 Connecting 2.1-channel Speakers Connecting 4.1-channel Speakers ASUS Desktop PC...
  • Page 28 Connecting 5.1-channel Speakers Connecting 7.1-channel Speakers Chapter 2: Connecting devices to your computer...
  • Page 29: Changing To The External Audio Output

    For the location of the rear Line Out port, refer to the section Getting to know your computer. Tick Front Speaker Out, then click OK. Tick Line In, then click OK. The audio output will now be from the external audio device. The Audio Manager screenshots above are for reference only. ASUS Desktop PC...
  • Page 30 Chapter 2: Connecting devices to your computer...
  • Page 31: Chapter 3 Using Your Computer

    • Use your Desktop PC in a comfortably-lit area, and keep it away from sources of glare such as windows and straight sunlight. • Take regular mini-breaks from using your Desktop PC. ASUS Desktop PC...
  • Page 32: Using The Optical Drive (Optional)

    Using the optical drive (optional) Inserting an optical disc To insert an optical disc: While your system is on, press the eject button below the drive bay cover to open the tray. Place the disc to the optical drive with the label side facing up.
  • Page 33: Configuring The Usb Ports Using The Bios

    Select the USB port that you want to enable or disable. Press <Enter> to enable or disable the selected USB port. Click Exit and select Save Changes & Reset to save the changes made. Refer to Chapter 1 for the location of the USB ports. ASUS Desktop PC...
  • Page 34: Configuring The Hdd Security Setting Using The Bios

    Configuring the HDD security setting using the BIOS You can set a password in the BIOS Setup to protect your HDD. To set a password for your HDD from the BIOS Setup: Press <Delete> to enter the BIOS Setup at startup. From the BIOS Setup EZ Mode screen, click Exit >...
  • Page 35: Chapter 4 Connecting To The Internet

    Refer to the documentation that came with your DSL/cable modem. Connect one end of an RJ-45 cable to the LAN (RJ-45) port on the rear panel of your computer and the other end to a DSL/cable modem. Modem RJ-45 cable ASUS Desktop PC...
  • Page 36 Connecting via a local area network (LAN) To connect via a LAN: Connect one end of an RJ-45 cable to the LAN (RJ-45) port on the rear panel of your computer and the other end to your LAN. RJ-45 cable Turn on your computer.
  • Page 37: Chapter 5 Troubleshooting

    Ensure that you enter the correct network security key for the wireless network you want to connect to. • Connect the external antennas (optional) to the antenna connectors on the ASUS WLAN Card and place the antennas on the top of your computer chassis for the best wireless performance. ASUS Desktop PC...
  • Page 38 The arrow keys on the number key pad are not working. Check if the Number Lock LED is off. When the Number Lock LED is on, the keys on the number key pad are used to input numbers only. Press the Number Lock key to turn the LED off if you want to use the arrow keys on the number key pad.
  • Page 39 It is caused by the different resolutions of your monitor and your HDTV. Adjust the screen resolution to fit your HDTV. To change the screen resolution: On Windows ® • From the Start menu, click Settings > System > Display. ASUS Desktop PC...
  • Page 40 My speakers produce no sound. • Ensure that you connect your speakers to the Line out port on the front panel or the rear panel. • Check if your speaker is connected to an electrical source and turned on. • Adjust your speakers’...
  • Page 41 • Ensure that the power cord is Your computer’s power properly connected. cord is not properly connected. • Use other compatible power cord. Contact the ASUS Service Center PSU (Power supply unit) about installing another PSU on your problems computer. ASUS Desktop PC...
  • Page 42 Ensure the LAN LED is on. If not, try another LAN cable. If it still does LAN cable problems not work, contact the ASUS service center. Your computer is not Ensure that your computer is properly Cannot access properly connected to a connected to a router or hub.
  • Page 43 Computer virus attack computer. • Reinstall the operating system. • Send the damaged hard disk drive to ASUS Service Center for Hard disk drive failure servicing. • Replace with a new hard disk drive. • Replace with compatible memory modules.
  • Page 44 • Contact the ASUS Service Center for assistance. If the problem still persists, refer to your Desktop PC’s warranty card and contact the ASUS Service Center. Visit the ASUS Support site at https://www.asus.com/support for the service center information.
  • Page 45: User Manual

    ASUS Desktop PC Windows ® User Manual Appendix Windows 10 User Manual ® E10435 First Edition May 2015 Copyright © ASUSTeK Computer Inc. All Rights Reserved...
  • Page 47: Starting For The First Time

    Follow the onscreen instructions to configure the following basic items: • Personalize • Get online • Settings • Your account Wait until Windows® 10 finishes installing the apps and system settings. After the installation, the Windows® 10 desktop appears. ASUS Desktop PC...
  • Page 48: Using The Windows 10 Ui

    Using the Windows 10 UI ® The Windows ® 10 User Interface (UI) includes the favorite Start menu and the tiled-formatted Start screen. It includes the following features you can use while working on your Desktop PC. Click your account name to change the Click to expand the Start screen picture, sign out of your account, or lock your Desktop PC Click to launch the Start menu Pin on or launch an app...
  • Page 49 Some apps require signing in to your Microsoft account before they are fully launched. Click to restore the Start screen Moving apps on the Start screen You can move apps from the Start screen simply through dragging and dropping the app to your preferred location. Unpinning apps from the Start screen To unpin an app from the Start screen, right-click on the app to activate its settings bar then click Unpin from Start. ASUS Desktop PC...
  • Page 50 Taskbar Windows® 10 comes with the standard taskbar, which keeps all your currently running apps or items in the background. Unpinning apps from the taskbar From the Start screen or taskbar, right-click the app you want to unpin. Click Unpin from Start or Unpin this program from taskbar to remove the app from the Start screen or taskbar.
  • Page 51 Snap another app to your preferred location on the screen. Using your keyboard a) Launch an app, press and the arrow keys to select the direction where you want to snap the app in place. b) Snap another app using and the arrow keys. ASUS Desktop PC...
  • Page 52: Keyboard Shortcuts

    Keyboard shortcuts Using your keyboard, you can also use the following shortcuts to help you launch apps and navigate Windows ® Switches between the Start screen and the last running app Launches the desktop + <D> Launches File Explorer + <E> Activates the File search function + <F>...
  • Page 53 From the Start menu, click Settings > Update & security > Recovery. Scroll down to view the Remove everything and reinstall Windows option. Under this option, click Get started. Follow the onscreen instructions to complete the reinstallation and reset process. ASUS Desktop PC...
  • Page 54: Asus Contact Information

    48720 Kato Rd., Fremont, CA 94538, USA Telephone +1-510-739-3777 Fax +1-510-608-4555 Web site http://www.asus.com/us/ Technical Support Support fax +1-812-284-0883 Telephone +1-812-282-2787 Online support http://qr.asus.com/techserv ASUS COMPUTER GmbH (Germany and Austria) Address Harkort Str. 21-23, D-40880 Ratingen, Germany Fax +49-2102-959931 Web site http://www.asus.com/de Online contact http://eu-rma.asus.com/sales Technical Support Telephone +49-2102-5789555 Support Fax +49-2102-959911 Online support http://qr.asus.com/techserv...

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