Intel DG31GL - Desktop Board Essential Series Motherboard Скачать руководство пользователя страница 25 | Manualshive

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Intel DG31GL - Desktop Board Essential Series Motherboard Скачать руководство пользователя страница 25

Installing and Replacing Desktop Board Components

25

Installing the I/O Shield

The Desktop Board comes with an I/O shield. When installed in the chassis, the shield
blocks radio frequency transmissions, protects internal components from dust and
foreign objects, and promotes correct airflow within the chassis.

Install the I/O shield before installing the Desktop Board in the chassis. Place the
shield inside the chassis as shown in Figure 4. Press the shield into place so that it fits
tightly and securely. If the shield does not fit, obtain a properly sized shield from the
chassis supplier.

Figure 4. Installing the I/O Shield

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Содержание DG31GL - Desktop Board Essential Series Motherboard

Страница 1: ...Intel Desktop Board DG31GL Product Guide Order Number E35043 001 ...

Страница 2: ...s for home or office use Canadian Department of Communications Compliance 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 Le présent appareil numerique német pas de bruits radioélectriques dépassant les limites applicables aux appareils num...

Страница 3: ...itability of this product for other PC or embedded non PC applications or other environments such as medical industrial alarm systems test equipment etc may not be supported without further evaluation by Intel Document Organization The chapters in this Product Guide are arranged as follows 1 Desktop Board Features a summary of product features 2 Installing and Replacing Desktop Board Components in...

Страница 4: ... to hardware or loss of data NOTE Notes call attention to important information Terminology The table below gives descriptions of some common terms used in the product guide Term Description GB Gigabyte 1 073 741 824 bytes GHz Gigahertz one billion hertz KB Kilobyte 1024 bytes MB Megabyte 1 048 576 bytes Mbit Megabit 1 048 576 bits MHz Megahertz one million hertz ...

Страница 5: ...AN Wake Capabilities 19 Instantly Available PC Technology 20 5 V Standby Power Indicator LED 20 Wake from USB 21 PME Signal Wake up Support 22 ENERGY STAR Capable 22 Speaker 22 Battery 22 Real Time Clock 22 2 Installing and Replacing Desktop Board Components Before You Begin 23 Installation Precautions 24 Prevent Power Supply Overload 24 Observe Safety and Regulatory Requirements 24 Installing the...

Страница 6: ... BIOS with the Intel Express BIOS Update Utility 53 Updating the BIOS with the ISO Image BIOS Update File or the Iflash Memory Update Utility 54 Obtaining the BIOS Update File 54 Updating the BIOS with the ISO Image BIOS Update File 54 Updating the BIOS with the Iflash Memory Update Utility 55 Recovering the BIOS 56 A Error Messages and Indicators BIOS Beep Codes 57 BIOS Error Messages 57 B Regula...

Страница 7: ...he Chassis Fan Header 43 22 Connecting Power Supply Cables 44 23 Location of the BIOS Configuration Jumper Block 45 24 Removing the Battery 51 25 Desktop Board DG31GL China RoHS Material Self Declaration Table 67 Tables 1 Feature Summary 9 2 Desktop Board DG31GL Components 12 3 LAN Connector LEDs 16 4 Front Panel Intel High Definition Audio Header Signal Names 40 5 S PDIF Connector Signal Names 40...

Страница 8: ...Intel Desktop Board DG31GL Product Guide viii ...

Страница 9: ...emory Controller Hub GMCH with Intel Graphics Media Accelerator 3100 Intel GMA 3100 Intel 82801G I O Controller Hub ICH7 Graphics Intel G31 Express Chipset Graphics and Memory Controller Hub GMCH Intel GMA 3100 Audio 4 channel two independent 2 channel audio streams onboard audio subsystem featuring Intel High Definition Audio Support for AC 97 audio RealTek ALC268 GR audio codec Onboard S PDIF co...

Страница 10: ...oltage sense to detect out of range power supply voltages Thermal sense to detect out of range temperatures Two fan headers Two fan sense inputs to monitor fan speed Supported Operating Systems Microsoft Windows Vista Ultimate 32 bit edition Microsoft Windows Vista Ultimate 64 bit edition Microsoft Windows XP Media Center Edition 2005 Microsoft Windows XP Professional Microsoft Windows XP Professi...

Страница 11: ...Desktop Board Features 11 Desktop Board Components Figure 1 shows the approximate location of the major components on Desktop Board DG31GL Figure 1 Desktop Board DG31GL Components ...

Страница 12: ...ocket K DDR2 Channel B DIMM 0 socket L Serial port header M Diskette drive connector N Main power connector 2 x 12 pin O IDE connector P Serial ATA connectors 2 Q Front panel header R Alternate front panel power LED header S BIOS configuration jumper block T High speed USB 2 0 headers 2 U Speaker V Front panel audio header For more information go to the following locations Supported processors htt...

Страница 13: ...mory specifications the board should be populated with DIMMs that support the Serial Presence Detect SPD data structure If your memory modules do not support SPD you will see a notification to this effect on the screen at power up The BIOS will attempt to configure the memory controller for normal operation The Desktop Board supports the dual or single channel memory configurations defined below T...

Страница 14: ...rator 3100 Intel GMA 3100 integrated graphics controller which has the following features 400 MHz core frequency Up to 2048 x 1536 display resolution at 75 Hz refresh QXGA High quality texture engine DX9 0c and OpenGL 1 4 compliant Hardware Pixel Shader 2 0 Vertex Shader Model 2 0 3D Graphics Rendering enhancements 1 6 dual texture GigaPixel s maximum fill rate 16 bit and 32 bit color Vertex cache...

Страница 15: ...dio For more information about audio drivers and utilities go to http support intel com support motherboards desktop Legacy Input Output I O Controller The legacy I O controller features the following Low pin count LPC interface One serial port interface via an onboard header Serial IRQ interface compatible with serialized IRQ support for PCI systems Intelligent power management including a progra...

Страница 16: ...tivity is occurring Off 10 Mb s data rate B Yellow On steady state 100 Mb s data rate Hi Speed USB 2 0 Support The Desktop Board supports up to eight USB 2 0 ports four ports routed to the back panel and four ports routed to two internal headers via the ICH7 USB 2 0 ports are backward compatible with USB 1 1 devices USB 1 1 devices will function normally at USB 1 1 speeds USB 2 0 support requires ...

Страница 17: ...deo BIOS The BIOS is stored in the Serial Peripheral Interface SPI Flash component The BIOS can be updated by following the instructions on page 53 in Chapter 3 Serial ATA and IDE Auto Configuration If you install a Serial ATA or IDE device such as a hard drive in your computer the auto configuration utility in the BIOS automatically detects and configures the device for your computer You do not n...

Страница 18: ... If only the supervisor password is set the computer boots without asking for a password If both passwords are set you can enter either password to boot the computer Related Links For instructions on resetting the password see Clearing Passwords on page 46 Hardware Monitoring and Fan Speed Control The features of the hardware monitoring and fan speed control include Monitoring of power supply volt...

Страница 19: ...the power connectors Fan Headers The function operation of the fans is as follows The fans are on when the computer is in the ACPI S0 state The fans are off when the computer is in the ACPI S3 S4 or S5 state Each fan header is wired to a tachometer input of the hardware monitoring and control device All fan headers support closed loop fan control that can adjust the fan speed or switch the fan on ...

Страница 20: ... the S3 sleep state the computer will appear to be off If the computer has a dual colored power LED on the front panel the sleep state is indicated by the LED turning amber When signaled by a wake up device or event the computer quickly returns to its last known awake state The Desktop Board supports the PCI Bus Power Management Interface Specification Add in cards that support this specification ...

Страница 21: ...op Board refer to the Technical Product Specification by going to http support intel com support motherboards desktop finding the product and clicking on the Technical Documents tab Wake from USB NOTE Wake from USB requires the use of a USB peripheral that supports Wake from USB USB bus activity wakes the computer from an ACPI S3 state ...

Страница 22: ...ents depending upon system configuration Go to the following link for information and recommendations concerning the new ENERGY STAR requirements http www intel com go EnergyStar Speaker A speaker is mounted on the Desktop Board The speaker provides audible error code beep code information during the Power On Self Test POST Battery A battery on the Desktop Board keeps the values in CMOS RAM and th...

Страница 23: ... telecommunications links networks or modems before performing any of the procedures described in this chapter Failure to disconnect power telecommunications links networks or modems before you open the computer or perform any procedures can result in personal injury or equipment damage Some circuitry on the board can continue to operate even though the front panel power button is off Follow these...

Страница 24: ...sure that the calculated total current loads of all the modules within the computer is less than the output current rating of each of the power supplies output circuits Observe Safety and Regulatory Requirements Read and adhere the instructions in this section and the instructions supplied with the chassis and associated modules If you do not follow these instructions and the instructions provided...

Страница 25: ...nternal components from dust and foreign objects and promotes correct airflow within the chassis Install the I O shield before installing the Desktop Board in the chassis Place the shield inside the chassis as shown in Figure 4 Press the shield into place so that it fits tightly and securely If the shield does not fit obtain a properly sized shield from the chassis supplier Figure 4 Installing the...

Страница 26: ...ource before performing the procedures described here Failure to disconnect the power before you open the computer can result in personal injury or equipment damage Refer to your chassis manual for instructions on installing and removing the Desktop Board Figure 5 shows the location of the mounting screw holes for Desktop Board DG31GL Figure 5 Desktop Board DG31GL Mounting Screw Hole Locations ...

Страница 27: ...ssor make sure the AC power has been removed by unplugging the power cord from the computer the standby power LED should not be lit see Figure 3 on page 21 Failure to do so could damage the processor and the board To install a processor follow these instructions 1 Observe the precautions in Before You Begin on page 23 2 Open the socket lever by pushing the lever down and away from the socket Figur...

Страница 28: ...e socket contacts Figure 7 B Figure 7 Lift the Load Plate 4 Remove the plastic protective socket cover from the load plate Figure 8 Do not discard the protective socket cover Always replace the socket cover if the processor is removed from the socket Figure 8 Remove the Protective Socket Cover ...

Страница 29: ...ver Always replace the processor cover if the processor is removed from the socket Figure 9 Remove the Processor from the Protective Processor Cover 6 Hold the processor with your thumb and index fingers oriented as shown in Figure 10 Make sure your fingers align to the socket cutouts Figure 10 A Align notches Figure 10 B with the socket Figure 10 C Lower the processor straight down without tiltin...

Страница 30: ...and engage the socket lever Figure 11 B Figure 11 Close the Load Plate Installing the Processor Fan Heat Sink Desktop Board DG31GL has mounting holes for a processor fan heat sink For instructions on how to attach the processor fan heat sink to the Desktop Board refer to the boxed processor manual ...

Страница 31: ...or fan header see Figure 12 A fan with a 4 pin connector as shown in Figure 12 A is recommended however a fan with a 3 pin connector Figure 12 B can be used However since the fan with a 3 pin connector cannot use the onboard fan control the fan will always operate at full speed Figure 12 Connecting the Processor Fan Heat Sink Cable to the Processor Fan Header ...

Страница 32: ...ll applicable Intel SDRAM memory specifications the board requires DIMMs that support the Serial Presence Detect SPD data structure The desktop board has two 240 pin DDR2 DIMM sockets providing Channel A and Channel B For dual channel performance install a matched pair of DIMMs equal in speed and size see Figure 13 Figure 13 Dual Channel Memory Configuration Example NOTE All other memory configura...

Страница 33: ...acing Desktop Board Components 33 Installing DIMMs To make sure you have the correct DIMM place it on the illustration of the DDR2 DIMM in Figure 14 All the notches should match with the DDR2 DIMM Figure 14 Use DDR2 DIMMs ...

Страница 34: ...re the clips at either end of the DIMM socket s are pushed outward to the open position 5 Holding the DIMM by the edges remove it from its anti static package 6 Position the DIMM above the socket Align the small notch at the bottom edge of the DIMM with the keys in the socket see inset in Figure 15 7 Insert the bottom edge of the DIMM into the socket 8 When the DIMM is inserted push down on the to...

Страница 35: ...IMM by the edges lift it away from the socket and store it in an anti static package 7 Reinstall and reconnect any parts you removed or disconnected to reach the DIMM sockets 8 Replace the computer s cover and reconnect the AC power cord Connecting the Diskette Drive Cable The diskette drive cable can be used to connect a single diskette drive to the Desktop Board For correct function of the cable...

Страница 36: ...and a disk drive using any other IDE transfer protocol are attached to the same cable the maximum transfer rate between the drives may be reduced to that of the slowest drive Do not connect an ATA device as a slave on the same IDE cable as an ATAPI master device For example do not connect an ATA hard drive as a slave to an ATAPI CD ROM drive For correct function of the cable 1 Observe the precauti...

Страница 37: ...Installing and Replacing Desktop Board Components 37 Figure 17 Connecting the IDE Cable ...

Страница 38: ...ed to connect a single internal SATA drive to the Desktop Board For correct cable function 1 Observe the precautions in Before You Begin on page 23 2 Attach one end of the SATA cable to one of the SATA connectors on the board Figure 18 A and attach the other end of the cable to the SATA drive Figure 18 B Figure 18 Connecting the Serial ATA Cable ...

Страница 39: ...ternal headers and connectors observe the precautions in Before You Begin on page 23 Figure 19 shows the location of the internal headers and connectors for Desktop Board DG31GL Item Description A Front panel audio B S PDIF C Serial port D Alternate front panel power LED E Front panel F USB 2 0 2 Figure 19 Internal Headers and Connectors ...

Страница 40: ...precautions in Before You Begin on page 23 2 Turn off all peripheral devices connected to the computer Turn off the computer and disconnect the AC power cord 3 Remove the cover 4 Install a correctly keyed and shielded front panel audio cable Connecting to the S PDIF Connector Figure 19 B on page 39 shows the location of the S PDIF connector Table 5 shows the pin assignments for the S PDIF connecto...

Страница 41: ...ion In Out 1 Front panel green LED Out 2 No pin 3 Front panel yellow LED Out Connecting to the Front Panel Header Before connecting to the front panel header observe the precautions in Before You Begin on page 23 See Figure 19 E on page 39 for the location of the multi colored front panel header Table 8 shows the pin assignments for the front panel header Table 8 Front Panel Header Signal Names Pi...

Страница 42: ... D 6 D 7 Ground 8 Ground 9 Key 10 No Connection Note USB ports may be assigned as needed NOTE Computer systems that have an unshielded cable attached to a USB port might not meet FCC Class B requirements even if no device or a low speed USB device is attached to the cable Use a shielded cable that meets the requirements for a full speed USB device Connecting to the Audio System After installing th...

Страница 43: ...nly Poor audio quality may occur if passive non amplified speakers are connected to this output Connecting Chassis Fan and Power Supply Cables Connecting the Chassis Fan Cable Connect a chassis fan cable to the 3 pin chassis fan header on the Desktop Board Figure 21 shows the location of the chassis fan header Figure 21 Location of the Chassis Fan Header ...

Страница 44: ...unction properly The 2 x 12 pin main power connector on the Desktop Board is backwards compatible with ATX12V power supplies with 2 x 10 cables Figure 22 shows the location of the Desktop Board power connectors Figure 22 Connecting Power Supply Cables 1 Observe the precautions in Before You Begin on page 23 2 Connect the main power supply cable to the 2 x 12 pin connector 3 Connect the 12 V proces...

Страница 45: ...the BIOS Configuration Jumper Block The three pin BIOS jumper block enables all board configurations to be done in the BIOS Setup program Table 10 shows the jumper settings for the BIOS Setup program modes Table 10 Jumper Settings for the BIOS Setup Program Modes Jumper Setting Mode Description Normal default 1 2 The BIOS uses the current configuration and passwords for booting Configure 2 3 After...

Страница 46: ...per on pins 2 3 as shown below 6 Replace the cover plug in the computer turn on the computer and allow it to boot 7 The computer starts the Setup program Setup displays the Maintenance menu 8 Use the arrow keys to select Clear Passwords Press Enter and Setup displays a pop up screen requesting that you confirm clearing the password Select Yes and press Enter Setup displays the maintenance menu aga...

Страница 47: ...st be in accordance with local environmental regulations PRÉCAUTION Risque d explosion si la pile usagée est remplacée par une pile de type incorrect Les piles usagées doivent être recyclées dans la mesure du possible La mise au rebut des piles usagées doit respecter les réglementations locales en vigueur en matière de protection de l environnement FORHOLDSREGEL Eksplosionsfare hvis batteriet erst...

Страница 48: ... onjuist type batterij Batterijen moeten zoveel mogelijk worden gerecycled Houd u bij het weggooien van gebruikte batterijen aan de plaatselijke milieuwetgeving ATENÇÃO Haverá risco de explosão se a bateria for substituída por um tipo de bateria incorreto As baterias devem ser recicladas nos locais apropriados A eliminação de baterias usadas deve ser feita de acordo com as regulamentações ambienta...

Страница 49: ...AUŢIE Risc de explozie dacă bateria este înlocuită cu un tip de baterie necorespunzător Bateriile trebuie reciclate dacă este posibil Depozitarea bateriilor uzate trebuie să respecte reglementările locale privind protecţia mediului ВНИМАНИЕ При использовании батареи несоответствующего типа существует риск ее взрыва Батареи должны быть утилизированы по возможности Утилизация батарей должна проводит...

Страница 50: ...da geri dönüştürülmelidir Kullanılmış piller yerel çevre yasalarına uygun olarak atılmalıdır OСТОРОГА Використовуйте батареї правильного типу інакше існуватиме ризик вибуху Якщо можливо використані батареї слід утилізувати Утилізація використаних батарей має бути виконана згідно місцевих норм що регулюють охорону довкілля ...

Страница 51: ...ct the computer s power cord from the AC power source wall outlet or power adapter 3 Remove the computer cover 4 Locate the battery on the board see Figure 24 5 With a medium flat bladed screwdriver gently pry the battery free from its connector Note the orientation of the and on the battery 6 Install the new battery in the connector orienting the and correctly 7 Replace the computer cover Figure ...

Страница 52: ...Intel Desktop Board DG31GL Product Guide 52 ...

Страница 53: ...t combines the functionality of the Intel Flash Memory Update Utility and the ease of use of Microsoft Windows based installation wizards To update the BIOS with the Intel Express BIOS Update utility 1 Go to the Intel World Wide Web site at http support intel com support motherboards desktop 2 Navigate to the DG31GL page click view Latest BIOS updates and select the Express BIOS Update utility fil...

Страница 54: ...oolkit Configuration File optional Intel Flash Memory Update Utility You can obtain either of these files through your computer supplier or by navigating to the Desktop Board DG31GL page on the Intel World Wide Web site at http support intel com support motherboards desktop Navigate to the DG31GL page click view Latest BIOS updates and select the ISO Image BIOS Update or Iflash BIOS Update utility...

Страница 55: ...ard BIOS Upgrade CD ROM page press any key to confirm the BIOS upgrade operation 6 Wait for the BIOS upgrade process to complete CAUTION DO NOT POWER DOWN YOUR COMPUTER before the update is complete The update may take up to 5 minutes Updating the BIOS with the Iflash Memory Update Utility With the Iflash Memory update utility you can update the system BIOS from a bootable CD ROM bootable USB flas...

Страница 56: ...t to the USB device 3 Manually run the IFLASH EXE file from the USB device and manually update the BIOS Recovering the BIOS It is unlikely that anything will interrupt the BIOS update however if an interruption occurs the BIOS could be damaged Due to BIOS size and recovery requirements a CD R with the BIO file in the root directory will be required For more information about updating the Intel Des...

Страница 57: ...ocessor was previously shutdown due to a thermal event overheating MULTI_BIT_ECC_ERROR The firmware has detected that a Multi Bit ECC Error occurred SINGLE_BIT_ECC_ERROR The firmware has detected that a Single Bit ECC Error occurred CMOS_BATTERY_ERROR The firmware has detected that a CMOS battery failure occurred CMOS_CHECKSUM_ERROR The firmware has detected that a CMOS Checksum Error occurred CMO...

Страница 58: ...Intel Desktop Board DG31GL Product Guide 58 ...

Страница 59: ...Technology Equipment Safety Part 1 General Requirements European Union IEC 60950 1 2005 Second Edition Information Technology Equipment Safety Part 1 General Requirements International Place Battery Marking There is insufficient space on this Desktop Board to provide instructions for replacing and disposing of the Lithium ion coin cell battery For system safety certification the statement below or...

Страница 60: ...006 95 EC Dutch Dit product is in navolging van de bepalingen van Europees Directief 2004 108 EC 2006 95 EC Eesti Antud toode vastab Euroopa direktiivides 2004 108 EC ja 2006 95 EC kehtestatud nõuetele Suomi Tämä tuote noudattaa EU direktiivin 2004 108 EC 2006 95 EC määräyksiä Français Ce produit est conforme aux exigences de la Directive Européenne 2004 108 EC 2006 95 EC Deutsch Dieses Produkt en...

Страница 61: ...verkats i enlighet med EG direktiv 2004 108 EC 2006 95 EC Türkçe Bu ürün Avrupa Birliği nin 2004 108 EC ve 2006 95 EC yönergelerine uyar Product Ecology Statements The following information is provided to address worldwide product ecology concerns and regulations Recycling Considerations As part of its commitment to environmental responsibility Intel has implemented the Intel Product Recycling Pro...

Страница 62: ...s etc Français Dans le cadre de son engagement pour la protection de l environnement Intel a mis en œuvre le programme Intel Product Recycling Program Programme de recyclage des produits Intel pour permettre aux consommateurs de produits Intel de recycler les produits usés en les retournant à des adresses spécifiées Visitez la page Web http www intel com intel other ehs product_ecology pour en sav...

Страница 63: ...ecycling Program для предоставления конечным пользователям марок продукции Intel возможности возврата используемой продукции в специализированные пункты для должной утилизации Пожалуйста обратитесь на веб сайт http www intel com intel other ehs product_ecology за информацией об этой программе принимаемых продуктах местах приема инструкциях об отправке положениях и условиях и т д Türkçe Intel çevre...

Страница 64: ...free Pb free means that lead has been removed where required by the RoHS legislation but still may exist as an impurity below 1000 ppm The term Lead free 2LI Pb free 2LI means lead free second level interconnect 2LI The balls leads or pads used to connect the component to a printed circuit board are lead free but the first level interconnect FLI is not lead free The use of lead in the FLI is accep...

Страница 65: ...s not greater than 0 1 by weight 1000 ppm or or Restriction of Hazardous Substances RoHS EU RoHS EU RoHS Directive 2002 95 EC restricts the use of the following six materials in various types of electronic and electrical equipment Lead Mercury Cadmium Hexavalent chromium Polybrominated biphenyls PBB Polybrominated diphenyl ether PBDE The maximum concentrations allowed are 0 1 or 1000 ppm except fo...

Страница 66: ...rolled substances contained in each product Desktop Board DG31GL is a China RoHS compliant product The required China RoHS mark indicates the product s Environmental Friendly Usage Period EFUP The EFUP is defined as the number of years for which listed controlled substances will not leak or chemically deteriorate while in the product The EFUP for Intel Desktop Boards has been determined to be 10 y...

Страница 67: ...MII stipulates that a material Self Declaration Table SDT must be included in a product s user documentation The SDT for Desktop Board DG31GL is shown in Figure 25 Figure 25 Desktop Board DG31GL China RoHS Material Self Declaration Table ...

Страница 68: ... European Union EN55022 2006 Australian Communications Authority Standard for Electromagnetic Compatibility Australia and New Zealand CISPR 22 2005 A1 2005 A2 2006 Limits and methods of measurement of Radio Disturbance Characteristics of Information Technology Equipment International CISPR 24 1997 A1 2001 A2 2002 Information Technology Equipment Immunity Characteristics Limits and Methods of Measu...

Страница 69: ... and are marked accordingly Pay close attention to the following when reading the installation instructions for the host chassis power supply and other modules Product certifications or lack of certifications External I O cable shielding and filtering Mounting grounding and bonding requirements Keying connectors when mating the wrong connectors could be hazardous If the power supply and other modu...

Страница 70: ...claring compliance to European Union EU EMC directive and Low Voltage directive Australian Communications Authority ACA and New Zealand Radio Spectrum Management NZ RSM C tick mark Includes adjacent Intel supplier code number N 232 Japan VCCI Voluntary Control Council for Interference mark S Korea MIC Ministry of Information and Communication mark Includes adjacent MIC certification number CPU DG3...

Страница 71: ...ctive as applicable should be obtained Additionally other directives such as the Radio and Telecommunications Terminal Equipment R TTE directive may also apply depending on product features In the United States A certification mark by a Nationally Recognized Testing Laboratory NRTL such as UL CSA or ETL signifies compliance with safety requirements Wiring and cables must also be UL listed or recog...

Страница 72: ...Intel Desktop Board DG31GL Product Guide 72 ...

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