Dell OptiPlex 5090 Tower Service Manual
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Dell OptiPlex 5090 Tower Service Manual

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OptiPlex 5090 Tower
Service Manual
Regulatory Model: D29M
Regulatory Type: D29M003
August 2021
Rev. A02
Table of Contents
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Summary of Contents for Dell OptiPlex 5090 Tower

  • Page 1 OptiPlex 5090 Tower Service Manual Regulatory Model: D29M Regulatory Type: D29M003 August 2021 Rev. A02...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2021 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Contents Chapter 1: Working inside your computer..................6 Safety instructions................................6 Before working inside your computer........................6 Safety precautions.................................7 Electrostatic discharge—ESD protection........................7 ESD field service kit ..............................8 Transporting sensitive components.......................... 9 After working inside your computer..........................9 Chapter 2: Removing and installing components................10 Recommended tools................................10 Screw List....................................
  • Page 4 Installing the processor.............................. 33 Graphics card..................................35 Removing the graphics card............................. 35 Installing the graphics card............................36 Graphical processing unit..............................37 Removing the powered GPU............................ 37 Installing the powered GPU............................38 Coin-cell battery................................39 Removing the coin-cell battery..........................39 Installing the coin-cell battery..........................39 WLAN card..................................40 Removing the WLAN card............................40 Installing the WLAN card............................41...
  • Page 5 Updating the BIOS in Windows............................83 Updating the BIOS using the USB drive in Windows....................83 Backup media and recovery options..........................83 WiFi power cycle................................83 Drain residual flea power (perform hard reset)......................84 Chapter 6: Getting help and contacting Dell................85 Contents...

  • Page 6: Chapter 1: Working Inside Your Computer

    You should only perform troubleshooting and repairs as authorized or directed by the Dell technical assistance team. Damage due to servicing that is not authorized by Dell is not covered by your warranty. See the safety instructions that is shipped with the product or at www.dell.com/regulatory_compliance.

  • Page 7: Safety Precautions

    ESD protection is an increasing concern. Due to the increased density of semiconductors used in recent Dell products, the sensitivity to static damage is now higher than in previous Dell products. For this reason, some previously approved methods of handling parts are no longer applicable.

  • Page 8: Esd Field Service Kit

    Always place parts in your hand, on the ESD mat, in the system, or inside an anti-static bag. ● Transporting Sensitive Components – When transporting ESD sensitive components such as replacement parts or parts to be returned to Dell, it is critical to place these parts in anti-static bags for safe transport. Working inside your computer...

  • Page 9: Transporting Sensitive Components

    It is recommended that all field service technicians use the traditional wired ESD grounding wrist strap and protective anti-static mat at all times when servicing Dell products. In addition, it is critical that technicians keep sensitive parts separate from all insulator parts while performing service and that they use anti-static bags for transporting sensitive components.

  • Page 10: Chapter 2: Removing And Installing Components

    Removing and installing components NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Recommended tools The procedures in this document require the following tools: ● Phillips #0 screwdriver ● Phillips #1 screwdriver ●...

  • Page 11: Major Components Of Your System

    Major components of your system 1. Side cover Removing and installing components...

  • Page 12: Side Cover

    15. Power Supply Unit NOTE: Dell provides a list of components and their part numbers for the original system configuration purchased. These parts are available according to warranty coverages purchased by the customer. Contact your Dell sales representative for purchase options.

  • Page 13: Installing The Side Cover

    Steps 1. Loosen the two thumbscrews (#6-32) that secure the side cover to the computer. 2. Slide the side cover towards the rear of the computer and lift the cover away from the computer. Installing the side cover Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the side cover and provides a visual representation of the installation procedure.
  • Page 14 Steps 1. Locate the side cover slot on your computer. 2. Align the tabs on the side cover with the slots on the chassis. 3. Slide the side cover towards the front of the computer to install it. 4. Tighten the two thumbscrews (#6-32) to secure the side cover to the computer. Next steps 1.

  • Page 15: Front Bezel

    Front bezel Removing the front bezel Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the front bezel and provide a visual representation of the removal procedure. Steps 1.

  • Page 16: Fan Shroud

    About this task The following image indicates the location of the front bezel and provides a visual representation of the installation procedure. Steps 1. Position the front bezel to align the tabs on the bezel with the slots on the chassis. 2.

  • Page 17: Installing The Fan Duct

    Steps 1. Press the retention tabs on both sides of the fan duct to release it. 2. Pull and remove the fan duct from the computer. Installing the fan duct Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the fan duct and provides a visual representation of the installation procedure.

  • Page 18: Hard-Drive Assembly

    Steps 1. Position the fan duct to align it with the slots on the computer chassis. 2. Press the fan duct until it clicks into place. Next steps 1. Install the side cover. 2. Follow the procedure in after working inside your computer.

  • Page 19: Installing The 2.5-Inch Hard-Drive Assembly

    Steps 1. Disconnect the hard-drive data and power cables from the connectors on the 2.5-inch hard-drive module. 2. Press the release tabs on both the sides of the hard-drive bracket to release it from the slots on the computer chassis. 3.

  • Page 20: 3.5 In. Hard-Drive Assembly

    Steps 1. Align the hard-drive assembly at an angle to the slot on the computer. 2. Press the release tabs on the hard-drive bracket and slightly align back to insert the hard-drive assembly to the slot on the computer chassis. 3.

  • Page 21: Installing The 3.5-Inch Hard-Disk Drive Assembly

    About this task The following images indicate the location of the 3.5-inch hard-disk drive assembly and provide a visual representation of the removal procedure. Steps 1. Disconnect the data and power cables from the 3.5-inch hard-disk drive module. 2. Remove the fours (#6-32) screws that secure the hard-disk drive to the chassis. 3.

  • Page 22: Solid-State Drive

    Steps 1. Slide and insert the 3.5-inch hard-disk drive into the hard-disk drive slot. 2. Replace the fours (#6-32) screws to secure the hard-disk drive to the chassis. 3. Route the power cable and the data cable through the routing guides and connect the cables to the hard-disk drive. Next steps 1.

  • Page 23: Installing The M.2 2230 Pcie Solid-State Drive

    Steps 1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board. 2. Slide and lift the solid-state drive off the system board. Installing the M.2 2230 PCIe solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

  • Page 24: Removing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector. 2. Insert the solid-state drive at a 45-degree angle into the slot on the system board. 3. Replace the screw (M2x3.5) to secure the M.2 2230 solid-state drive to the system board. Next steps 1.

  • Page 25: Installing The M.2 2280 Pcie Solid-State Drive

    Steps 1. Remove the screw (M2x3.5) that secures the solid-state drive to the system board. 2. Slide and lift the solid-state drive off the system board. Installing the M.2 2280 PCIe solid-state drive Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the solid-state drive and provides a visual representation of the installation procedure.

  • Page 26: Memory Module

    Steps 1. Align the notch on the solid-state drive with the tab on the solid-state drive connector. 2. Insert the solid-state drive at a 45-degree angle into the slot on the system board. 3. Replace the screw (M2x3.5) to secure the M.2 2280 solid-state drive to the system board. Next steps 1.

  • Page 27: Installing The Memory Module

    Steps 1. Pull the securing clips from both side of the memory module until the memory module pops up. 2. Slide and remove the memory module from the memory-module slot. Installing the memory module Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the memory module and provides a visual representation of the installation procedure.

  • Page 28: Sd Card Reader (Optional)

    Steps 1. Align the notch on the memory module with the tab on the memory-module slot. 2. Slide the memory module firmly into the slot at an angle and press the memory module down until it clicks into place. NOTE: If you do not hear the click, remove the memory module and reinstall it.

  • Page 29: Installing The Sd Card Reader

    Steps 1. Unroute the cables from the routing guides on the chassis. 2. Disconnect the SD card reader from its connector on the system board. Installing the SD card reader Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the SD card reader and provides a visual representation of the installation procedure.

  • Page 30: Processor Fan And Heat-Sink Assembly

    Steps 1. Connect the SD card reader to its connector on the system board. 2. Route the cables through the routing guides on the chassis. Next steps 1. Install the memory module. 2. Install the duct. 3. Install the side cover.

  • Page 31: Installing The Processor Fan And Heat-Sink Assembly

    Steps 1. Disconnect the processor fan cable from the connector on the system board. 2. Loosen the four captive screws that secure the processor fan and heat-sink assembly to the system board. 3. Lift the processor fan and heat-sink assembly off the system board. Installing the processor fan and heat-sink assembly Prerequisites NOTE:...

  • Page 32: Processor

    Steps 1. Align the screw holes on the processor fan and heat-sink assembly with the screw holes on the system board. 2. Tighten the four captive screws that secure the processor fan and heat-sink assembly to the system board. 3. Connect the processor-fan cable to the connector on the system board. Next steps 1.

  • Page 33: Installing The Processor

    Steps 1. Press down and push the release lever away from the processor to release it from the securing tab. 2. Lift the lever upward to lift the processor cover. CAUTION: When removing the processor, do not touch any of the pins inside the socket or allow any objects to fall on the pins in the socket.
  • Page 34 Steps 1. Ensure that the release lever on the processor socket is fully extended in the open position. 2. Align the notches on the processor with the tabs on the processor socket and place the processor in the processor socket. NOTE: The pin 1 corner of the processor has a triangle that aligns with the triangle on the pin 1 corner on the processor socket.

  • Page 35: Graphics Card

    Graphics card Removing the graphics card Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the graphics card and provide a visual representation of the removal procedure. Steps 1.

  • Page 36: Installing The Graphics Card

    Installing the graphics card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the graphics card and provide a visual representation of the installation procedure. Steps 1.

  • Page 37: Graphical Processing Unit

    Graphical processing unit Removing the powered GPU Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the powered graphical processing unit and provide a visual representation of the removal procedure.

  • Page 38: Installing The Powered Gpu

    Installing the powered GPU Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following images indicate the location of the powered graphical processing unit and provide a visual representation of the installation procedure.

  • Page 39: Coin-Cell Battery

    2. Follow the procedure in after working inside your computer. Coin-cell battery Removing the coin-cell battery Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. 3. Remove the duct. About this task The following images indicate the location of the coin-cell battery and provide a visual representation of the removal procedure. Steps 1.

  • Page 40: Wlan Card

    Steps 1. Insert the coin cell battery with the "+" sign facing up and slide it under the securing tabs at the positive side of the connector. 2. Press the battery into the connector until it locks into place. Next steps 1.

  • Page 41: Installing The Wlan Card

    Steps 1. Remove the (M2x3.5) screw that secures the WLAN card to the system board. 2. Lift the WLAN card bracket away from the WLAN card. 3. Disconnect the antenna cables from the WLAN card. 4. Slide and remove the WLAN card from the connector on the system board. Installing the WLAN card Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 42 Steps 1. Connect the antenna cables to the WLAN card. The following table provides the antenna-cable color scheme for the WLAN card of your computer. Table 2. Antenna-cable color scheme Connectors on the wireless card Antenna-cable color Main (white triangle) White Auxiliary (black triangle) Black...

  • Page 43: Slim Optical-Drive

    Slim optical-drive Removing the Slim optical drive Prerequisites 1. Follow the procedure in before working inside your computer. 2. Remove the side cover. About this task The following images indicate the location of the slim ODD and provide a visual representation of the removal procedure. Steps 1.

  • Page 44: Speaker

    Steps 1. Insert the slim ODD assembly into the ODD slot. 2. Slide the slim ODD assembly until it snaps into place. 3. Route the power cable and data cable through the routing guides and connect the cables to the slim ODD. Next steps 1.

  • Page 45: Installing The Speaker

    Steps 1. Disconnect the speaker cable from the connector on the system board. 2. Unroute the speaker cable from the routing guides on the chassis. 3. Press the tab and slide the speaker along with the cable from the slot on the chassis. Installing the speaker Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 46: Power Button

    Steps 1. Press and slide the speaker in the slot on the chassis until it snaps into place. 2. Route the speaker cable through the routing guide on the chassis. 3. Connect the speaker cable to the connector on the system board. Next steps 1.

  • Page 47: Installing The Power Button

    Steps 1. Disconnect the power-button cable from the connector on the system board. 2. Press the release tabs on the power-button head and slide the power-button cable out from the front-side chassis of the computer. 3. Pull the power-button cable out from the computer. Installing the power button Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 48: Power-Supply Unit

    Steps 1. Insert the power-button cable into the slot from the front-side of the computer, and press the power-button head until it clicks into the place in the chassis. 2. Align and connect the power-button cable to the connector on the system board. Next steps 1.
  • Page 49 Removing and installing components...

  • Page 50: Installing The Power-Supply Unit

    Steps 1. Lay the computer on the right side. 2. Disconnect the power cables from the system board and unroute them from the routing guides on the chassis. 3. Remove the three (#6-32) screws that secure the power-supply unit to the chassis. 4.
  • Page 51 Removing and installing components...

  • Page 52: Intrusion Switch

    Steps 1. Slide the power-supply unit into the chassis until the securing tab snaps into position. 2. Replace the three (#6-32) screws to secure the power-supply unit to the chassis. 3. Route the power cable through the routing guides on the chassis and connect the power cables to their respective connectors on the system board.

  • Page 53: Installing The Intrusion Switch

    Steps 1. Disconnect the intruder cable from the connector on the system board. 2. Slide and remove the intrusion switch from the chassis. Installing the intrusion switch Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure. About this task The following image indicates the location of the intrusion switch and provides a visual representation of the installation procedure.

  • Page 54: Optional I/O Modules (Type C/ Hdmi/Vga/Dp/Serial)

    Steps 1. Insert the intrusion switch into its slot and slide the switch to secure it into the slot. 2. Connect the intruder cable to the connector on the system board. Next steps 1. Install the duct. 2. Install the side cover.

  • Page 55: Installing Optional I/O Modules (Type-C/Hdmi/Vga/Dp/Serial)

    Steps 1. Remove the two (M3X3) screws that secure the optional i/O module to the computer chassis. 2. Disconnect the I/O-module cable from the connector on the system board. 3. Remove the I/O module from the computer. Installing optional I/O modules (Type-C/HDMI/VGA/DP/Serial) Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.

  • Page 56: System Board

    Steps 1. To remove the dummy metal bracket, insert a flat-head screwdriver in the hole of the bracket, push the bracket to release the bracket, and then lift the bracket out from the system. 2. Insert the optional I/O module (Type-C/HDMI/VGA/DP/Serial) into its slot from the inside of your computer. 3.
  • Page 57 NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can reconnect the cables correctly after you replace the system board. 2. Remove the side cover. 3. Remove the front bezel. 4. Remove the duct.
  • Page 58 11. SATA3 connector (white) 12. SATA0 connector (blue) 13. M.2 WLAN connector 14. M.2 PCIe SSD connector 15. PCIe x4 (Slot4) 16. PCIe x16 (Slot3) 17. PCIe x1 (Slot2) 18. PCIe x1 (Slot1) 19. Type-C connector 20. Processor socket 21. Keyboard and Mouse serial connector The following images indicate the location of the system board and provide a visual representation of the removal procedure.
  • Page 59 Removing and installing components...
  • Page 60 Steps 1. Remove the two (#6-32) screws that secure the front I/O-bracket to the chassis. 2. Slide and remove the front I/O-bracket from the chassis. 3. Disconnect the power cables that are connected to the system board and unroute them from the routing guides on the chassis.

  • Page 61: Installing The System Board

    4. Remove the eight (#6-32) screws that secure the system board to the chassis. 5. Remove the (#6-32) screw that secures the system board to the chassis. 6. Lift the system board at an angle and remove the system board off the chassis. Installing the system board Prerequisites If you are replacing a component, remove the existing component before performing the installation procedure.
  • Page 62 18. PCIe x1 (Slot1) 19. Type-C connector 20. Processor socket 21. Keyboard and Mouse serial connector The following images indicate the location of the system board and provide a visual representation of the installation procedure. Removing and installing components...
  • Page 63 Removing and installing components...
  • Page 64 Steps 1. Slide the front I/O-ports on the system board into the front I/O-slots on the chassis and align the screw holes on the system board with the screw holes on the chassis. 2. Replace the (#6-32) screw to secure the system board to the chassis. 3.
  • Page 65 4. Route the power cable through the routing guides on the chassis and connect the power cables to their respective connectors on the system board. 5. Align the front I/O-bracket with the slots on the chassis. 6. Replace the two (#6-32) screws to secure the front I/O-bracket to the chassis. Next steps 1.

  • Page 66: Chapter 3: Software

    This chapter details the supported operating systems along with instructions on how to install the drivers. Drivers and downloads When troubleshooting, downloading or installing drivers it is recommended that you read the Dell Knowledge Based article, Drivers and Downloads FAQ 000123347.

  • Page 67: Chapter 4: System Setup

    Boot menu Press when the Dell logo appears to initiate a one-time boot menu with a list of the valid boot devices for the system. Diagnostics and BIOS Setup options are also included in this menu. The devices listed on the boot menu depend on the bootable devices in the system.

  • Page 68: Boot Sequence

    Boot sequence enables you to bypass the System Setup–defined boot device order and boot directly to a specific device (for example: optical drive or hard drive). During the Power-on Self-Test (POST), when the Dell logo appears, you can: ● Access System Setup by pressing F2 key ●...
  • Page 69 Table 3. System setup options—System information menu (continued) Overview Memory Information Memory Installed Displays the total computer memory installed. Memory Available Displays the total computer memory available. Memory Speed Displays the memory speed. Memory Channel Mode Displays single or dual channel mode. Memory Technology Displays the technology that is used for the memory.
  • Page 70 Table 4. System setup options—Boot Configuration menu (continued) Boot Configuration By default, the custom mode option is not enabled. Custom Mode Key Management Select the custom values for expert key management. Table 5. System setup options—Integrated Devices menu Integrated Devices Date/Time Displays the current date in MM/DD/YYYY format and current time in HH:MM:SS AM/PM format.
  • Page 71 Table 6. System setup options—Storage menu (continued) Storage Type Displays the SATA HDD type information of the computer. Device Displays the SATA HDD device information of the computer. SATA-2 Type Displays the SATA HDD type information of the computer. Device Displays the SATA HDD device information of the computer.
  • Page 72 Table 8. System setup options—Connection menu (continued) Connection Enable UEFI Network Stack Enable or disable UEFI Network Stack and controls the on-board LAN Controller. By default, the option is enabled. HTTPs Boot Feature HTTPs Boot Enable or disable the HTTPs Boot feature. By default, the HTTPs Boot option is enabled.
  • Page 73 Table 10. System setup options—Security menu (continued) Security By default, the Attestation Enable option is enabled. Key Storage Enable Enables to control whether the Trusted Platform Module (TPM) Storage Hierarchy is available to the operating system. By default, the Key Storage Enable option is enabled. SHA-256 BIOS and the TPM will use the SHA-256 hash algorithm to extend measurements into the TPM PCRs during BIOS boot.
  • Page 74 Allow Non-Admin PSID Revert Enable Allow Non-Admin PSID Revert Controls access to the Physical Security ID (PSID) revert of NVMe hard-drives from the Dell Security Manager prompt. By default, the option is disabled. Table 12. System setup options—Update, Recovery menu...
  • Page 75 By default, the option is disabled. SERR Messages Enable or disable SERR messages. By default, the option is enabled. Dell Development Configuration Enable Flash Updated Signature Override Enable or disable certain features to control BIOS By default, the option is disabled.
  • Page 76 Table 15. System setup options—Pre-boot Behavior menu Pre-boot Behavior Warning and Errors Enable or disable the action to be done when a warning or error is encountered. By default, the Prompt on Warnings and Errors option is enabled. Fastboot Enable to set the speed of the boot process. By default, the Minimal option is enabled.

  • Page 77: Updating The Bios

    Steps 1. Go to www.dell.com/support. 2. Click Product support. In the Search support box, enter the Service Tag of your computer, and then click Search. NOTE: If you do not have the Service Tag, use the SupportAssist feature to automatically identify your computer. You can also use the product ID or manually browse for your computer model.

  • Page 78: Updating The Bios From The F12 One-Time Boot Menu

    One-Time boot menu on the computer. Most of the Dell computers built after 2012 have this capability, and you can confirm by booting your computer to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your computer. If the option is listed, then the BIOS supports this BIOS update option.

  • Page 79: System And Setup Password

    System and setup password Table 19. System and setup password Password type Description System password Password that you must enter to log on to your system. Setup password Password that you must enter to access and make changes to the BIOS settings of your computer. You can create a system password and a setup password to secure your computer.
  • Page 80 The System Security screen is displayed. 2. In the System Security screen, verify that Password Status is Unlocked. 3. Select System Password, alter or delete the existing system password and press Enter or Tab. 4. Select Setup Password, alter or delete the existing setup password and press Enter or Tab. NOTE: If you change the System and/or Setup password, re enter the new password when prompted.

  • Page 81: Chapter 5: Troubleshooting

    Blinking pattern Amber White Problem description Suggested resolution Unrecoverable SPI Flash Failure CPU failure ● Run the Dell Support Assist/Dell Diagnostics tool. ● If problem persists, replace the system board. System board failure (included ● Flash latest BIOS version BIOS corruption or ROM ●...

  • Page 82: Recovering The Operating System

    It enables you to diagnose hardware issues, repair your computer, back up your files, or restore your computer to its factory state. You can also download it from the Dell Support website to troubleshoot and fix your computer when it fails to boot into their primary operating system due to software or hardware failures.

  • Page 83: Updating The Bios In Windows

    Backup media and recovery options It is recommended to create a recovery drive to troubleshoot and fix problems that may occur with Windows. Dell proposes multiple options for recovering Windows operating system on your Dell PC. For more information. see...

  • Page 84: Drain Residual Flea Power (Perform Hard Reset)

    5. Press and hold the power button for 20 seconds to drain the flea power. 6. Install the battery. 7. Install the base cover. 8. Connect the power adapter to your computer. 9. Turn on your computer. NOTE: For more information about performing a hard reset, see the knowledge base article 000130881 www.dell.com/support. Troubleshooting...

  • Page 85: Chapter 6: Getting Help And Contacting Dell

    Getting help and contacting Dell Self-help resources You can get information and help on Dell products and services using these self-help resources: Table 21. Self-help resources Self-help resources Resource location Information about Dell products and services www.dell.com My Dell app...

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