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Dell OptiPlex 5055 Tower
Owner's Manual
Regulatory Model: D18M
Regulatory Type: D18M004
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Summary of Contents for Dell OptiPlex 5055 Tower

  • Page 1 Dell OptiPlex 5055 Tower Owner's Manual Regulatory Model: D18M Regulatory Type: D18M004...
  • Page 2 A WARNING indicates a potential for property damage, personal injury, or death. © 2018 2018 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 1 Working on your computer..........................6 Safety instructions................................6 Turning off your computer..............................6 Turning off your — Windows............................. 6 Before working inside your computer..........................7 After working inside your computer..........................7 2 Chassis................................8 Front chassis view................................8 Back chassis view ................................9 3 Disassembly and reassembly........................
  • Page 4 Installing the system board............................45 System board layout..............................46 4 Technology and components........................49 Systems management features............................. 49 In-Band Systems Management – Dell Client Command Suite...................49 Out-of-Band Systems Management – DASH......................50 AMD APUs, AMD Ryzen CPUs and APUs........................50 AMD Advanced Processing Unit - APU........................50 AMD Ryzen.................................50...
  • Page 5 Updating BIOS on systems with BitLocker enabled....................64 Updating your system BIOS using a USB flash drive.................... 64 Updating the Dell BIOS in Linux and Ubuntu environments..................64 Flashing the BIOS from the F12 One-Time boot menu....................65 Technical Specifications..............................68 Processor..................................
  • Page 6: Working On Your Computer

    Damage due to servicing that is not authorized by Dell is not covered by your warranty. Read and follow the safety instructions that came with the product.
  • Page 7: Before Working Inside Your Computer

    Before working inside your computer To avoid damaging your computer, perform the following steps before you begin working inside the computer. Ensure that you follow the Safety Instruction. Ensure that your work surface is flat and clean to prevent the computer cover from being scratched. Turn off your computer.
  • Page 8: Chassis

    Chassis Front chassis view Power button and power light Hard drive activity light Memory card reader (optional) Optical drive (optional) Headset port USB 2.0 port with PowerShare USB 2.0 port USB 3.1 Gen1 port Chassis...
  • Page 9: Back Chassis View

    Back chassis view Line-out port DisplayPort Serial port PS/2 keyboard port USB 3.1 Gen1 port USB 2.0 ports (supports Smart Power On) Expansion card slots Power connector port Power supply diagnostic light Padlock ring Kensington security cable slot Network port PS/2 mouse port VGA connector port (optional) Release latch...
  • Page 10: Disassembly And Reassembly

    Disassembly and reassembly Back cover Removing Back Cover Follow the procedure in Before working inside your computer. To release back cover: Slide the latch (blue tab) to release the back cover from the computer [1]. b Slide the back cover toward the back of the computer [2]. Lift the back cover to remove it from the computer.
  • Page 11: Installing Cover

    Installing cover Place the cover on the computer and slide the cover forward until it clicks into place. Follow the procedure in After working inside your computer. Front Bezel Removing front bezel Follow the procedure in Before working inside your computer.
  • Page 12 Lift the front bezel to remove it from the computer. Disassembly and reassembly...
  • Page 13: Installing Front Bezel

    Installing front bezel Position the bezel to align with the tab holders on the base of the chassis frame. Press the bezel until the retention tabs click into place. Install the Back cover. Follow the procedure in After working inside your computer.
  • Page 14: Storage Device

    Storage device Removing 3.5–inch hard drive assembly Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel To remove hard drive assembly: Disconnect the hard drive assembly cables from the connectors on the hard drive. Disassembly and reassembly...
  • Page 15 NOTE: Un-route the cables from the clips from the drive cage. b Open the front panel door. Remove the HDD filler bracket. Disassembly and reassembly...
  • Page 16 d Press the blue tab [1] and pull the hard drive assembly out of the computer [2]. Disassembly and reassembly...
  • Page 17 NOTE: The tab may indicate 5.25 inch because you can also install a 5.25 inch hard drive in same drive bay. Removing 3.5–inch hard drive from the hard drive bracket Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Hard drive assembly...
  • Page 18: Removing 2.5-Inch Hard Drive Assembly

    Installing 3.5–inch hard drive into the hard drive bracket Flex the side of the hard drive bracket, to align and insert the pins on the bracket into the hard drive. Insert the hard drive into the hard drive bracket until it clicks into place. Install the: Hard drive assembly Front bezel...
  • Page 19 Removing 2.5–inch hard drive from the hard drive bracket Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel 2.5 inch hard drive assembly To remove hard drive bracket: Pull one side of the hard drive bracket to disengage the pins on the bracket from the slots on the hard drive [1]. b Lift the drive out of the drive bracket [2].
  • Page 20: Optical Drive

    Installing 2.5–inch hard drive into the hard drive bracket Flex the side of the hard drive bracket, to align and insert the pins on the bracket into the hard drive. Insert the hard drive into the hard drive bracket until it clicks into place. Install the: 2.5 inch hard drive assembly Front bezel...
  • Page 21 Press the blue release tab [1] and slide the optical drive out of the computer [2]. Disassembly and reassembly...
  • Page 22: Installing Optical Drive

    Installing optical drive Insert the optical drive into the optical drive bay until it clicks into place. Open the Front panel door. Route the data cable and power cable under the drive cage. Connect the data cable and power cable to the connectors on the optical drive. Close the front panel door.
  • Page 23: Installing Optional M.2 Pcie Ssd

    Open the Front panel door. To remove the M.2 PCIe SSD: Pull the blue plastic tab that secures the M.2 PCIe SSD to the system board [1]. b Slide the M.2 PCIe SSD from the connector on the system board [2]. Installing optional M.2 PCIe SSD Insert the M.2 PCIe SSD to the connector.
  • Page 24: Sd Card

    SD card Removing SD card reader Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Open the Front panel door. To remove the SD card reader: Disconnect the SD card reader cable from the connector on the system board [1]. b Remove the screw( 6+/-1) that secures the SD card reader to the front panel door [2].
  • Page 25: Finstalling Sd Card Reader

    FInstalling SD card reader Insert the SD card reader into the slot on the system board. Replace the screw(6+/-1) to secure the SD card reader to the front panel door. NOTE: The screw holder is beneath the SD card reader. Connect the SD card reader cable to the connector on the system board.
  • Page 26: Expansion Card

    Expansion card Removing PCIe expansion card Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Remove the Front panel door. To remove the PCIe expansion card: Pull the release latch to unlock the PCIe expansion card [1]. b Push the release tab [2] and lift the PCIe expansion card out of the computer [3].
  • Page 27: Installing Pcie Expansion Card

    NOTE: To remove the PCIe brackets (2 and 4), push the bracket upwards from the inside of your computer to release it and then lift the bracket away from your computer. Repeat the steps to remove any additional PCIe expansion cards. Installing PCIe expansion card Insert the PCIe expansion card to the connector on the system board.
  • Page 28 To remove the PSU: Press the release tab [1]. NOTE: Release tab is at the base of the PSU b Slide and lift the PSU away from the computer [2]. Disassembly and reassembly...
  • Page 29: Installing Power Supply Unit - Psu

    Installing power supply unit – PSU Insert the PSU into the PSU slot and slide it toward the back of the computer until it clicks into place. Replace the screws( 6+/-1) to secure the PSU to the computer. Route the PSU cables through the retention clips. Connect the PSU cables to the connectors on the system board.
  • Page 30: Removing Intrusion Switch

    Removing intrusion switch Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Open the Front panel door. To the intrusion switch: Disconnect the intrusion switch cable from the connector on the system board [1]. b Un-route the intrusion switch cable from the cable holder.
  • Page 31: Power Switch

    Install the: Front bezel Back cover Follow the procedure in After working inside your computer. Power switch Removing power switch Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Open the Front panel door. To release the power switch: Disconnect the power switch cable from the system board [1].
  • Page 32: Installing Power Switch

    Installing power switch Insert the power switch into the slot from the front of the computer and press it until it clicks into place. Align the cable with the pins on the connector and connect the cable. Close the front panel door. Install the: Front bezel Back cover...
  • Page 33 To remove the speaker: Disconnect the speaker cable from the connector on the system board [1]. b Close the front panel door [2]. Press the release tabs [1], and slide the speaker module [2] out of the slot. Disassembly and reassembly...
  • Page 34: Installing Speaker

    Installing speaker Insert the speaker into the slot. Press the speaker module until it clicks into place. Connect the speaker cable to the connector on the system board. Close the front panel door. Install the: Front bezel Back cover Follow the procedure in After working inside your computer.
  • Page 35: Installing Coin Cell Battery

    Expansion card Open the Front panel door. To remove the coin cell battery: Using a plastic scribe press the release latch until the coin cell battery pops out [1]. b Remove the coin cell battery from the connector on the system board [2]. Installing coin cell battery Hold the coin cell battery with the "+"...
  • Page 36: Heat Sink Assembly

    Heat sink assembly Removing heat sink assembly Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Open the Front panel door. To remove the heat sink assembly: Disconnect the heat sink assembly cable from the connector on the system board [1]. b Loosen the captive screws(6+/-1) that secure the heat sink assembly to the system board [2].
  • Page 37: Installing Heat Sink Assembly

    Installing heat sink assembly Align the screws of the heat sink assembly with the holders on the system board. Place the heat sink assembly on the processor. Replace the captive screws (6+/-1) to secure the heat sink assembly to the system board. NOTE: Tighten the screws based on the order given in the system board.
  • Page 38: Installing The Processor

    Installing the processor Align the processor with the socket keys. CAUTION: Do not use force to seat the processor. When the processor is positioned correctly, it engages easily into the socket. Align the pin-1 indicator of the processor with the triangle on the socket. Place the processor on the socket such that the slots on the processor align with the socket keys.
  • Page 39: System Fan

    System fan Removing the system fan Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Open the Front panel door. To remove the system fan: Disconnect the system fan cable from the connector on the system board [1]. b Remove the tape that holds the intrusion switch cable on the system fan and move the cable away.
  • Page 40: Installing The System Fan

    Installing the system fan Insert the grommets into the slots on the chassis frame. Hold the system fan with the cable facing the base of the computer. Align the grooves of the system fan with the grommets on the chassis wall. Pass the grommets through the corresponding grooves on the system fan.
  • Page 41: Installing The Vga Daughter Board

    Installing the VGA daughter board Align the VGA daughter board with the screw holder on the system board. Tighten the screw to secure the VGA daughter board to the system board. Insert the VGA connector into the slot at the back of the computer. Tighten the screws to secure the VGA connector to the computer.
  • Page 42: System Board

    System board Removing the system board Follow the procedure in Before working inside your computer. Remove the: Back cover Front bezel Open the front panel door. Remove the: Heat sink assembly Processor Expansion card Optional M.2 PCIe SSD card SD card reader Memory module Disconnect the optical drive and hard drive cables [1,2] from the connectors on the system board.
  • Page 43 b power switch [2] speaker [3] d PSU [4] power distribution for optical drive and hard drive [5] system fan [6] g intrusion switch [7] To remove the system board: Remove the screws (6+/-1) that secure the system board to the computer Disassembly and reassembly...
  • Page 44 b Slide and lift the system board away from the computer [2]. Disassembly and reassembly...
  • Page 45: Installing The System Board

    Installing the system board Hold the system board by its edges and align it toward the back of the computer. Lower the system board into the chassis until the connectors at the back of the system board align with the slots on the chassis, and the screw holes on the system board align with the standoffs on the computer (1).
  • Page 46: System Board Layout

    Connect the system fan cable to the connector on the system board. Close the front panel door. Install the: Memory module Optional M.2 PCIe SSD Expansion card SD card reader Processor Heat sink assembly Close the front panel door. Back cover Follow the procedure in After working inside your computer.
  • Page 47 Battery Connector (BATTERY) Memory Connector (DIMM1~DIMM4) Card Reader Connector (Card Reader) Power Switch Connector (PWR_SW) M.2 Socket 3 Connector (M.2 SSD) SATA 1 Connector (White Color) Internal Speaker Connector (INT_SPKR) SATA 3 Connector (Black Color) ATX Power Connector (ATX_SYS) HDD_ODD_Power Cable Connector (SATA PWR) SATA 2 Connector (Black color) SATA 0 Connector (Blue color) LPC_Debug1...
  • Page 48 Internal Speaker Connector (INT_SPKR) Internal USB Connector (WF_BT_USB) SATA 1 Connector White Color (SATA1) Battery Connector (BATTERY) Disassembly and reassembly...
  • Page 49: Technology And Components

    Dell Command | Deploy Driver Packs - Bundles of system specific drivers (web hosted on dell.com/command) that have been extracted and reduced to an OS consumable state for use with any OS deployment tool. Here is a link to Dell TechCenter where you can find the driver packs for each commercial client system: http://en.community.dell.com/techcenter/enterprise-client/w/wiki/2065.dell-command-...
  • Page 50: Out-Of-Band Systems Management - Dash

    Dell Command | Integration Suite for System Center 2012 - This suite integrates all the key components of the Client Command Suite into Microsoft System Center Configuration Manager 2012 and later.
  • Page 51: Amd Ryzen Apus

    • Performance: Simultaneous multithreading (SMT) to allow execution of two threads per core, increasing the Instruction Per Cycle(IPC) thus enhancing the processing throughput. • Power: AMD's Sense MI technology employs sensors across the chip to dynamically scaling the frequency and voltage automatically defined in processor itself allowing better use of available resources.
  • Page 52: Amd Radeon R5 M430

    Table 2. Key Specifications Specification AMD Radeon R7 M450 Product Line API Supported DirectX 12 , OpenCL 1.2 , OpenGL 4.3 Clock Speed 925 MHz Bus Width 128-bit Memory Clock Speed 1.125 GHz Technology DDR3 SDRAM Max External Resolution 1920 x 1080 Interface Type PCI Express 3.0 x16 AMD Radeon R5 M430...
  • Page 53: Usb 3.1 Gen 1 (Superspeed Usb)

    Table 4. USB evolution Type Data Transfer Rate Category Introduction Year USB 3.0/USB 3.1 Gen 2 5 Gbps Super Speed 2010 USB 2.0 480 Mbps High Speed 2000 USB 3.1 Gen 1 (SuperSpeed USB) For years, the USB 2.0 has been firmly entrenched as the de facto interface standard in the PC world with about 6 billion devices sold, and yet the need for more speed grows by ever faster computing hardware and ever greater bandwidth demands.
  • Page 54: Applications

    With today's ever increasing demands placed on data transfers with high-definition video content, terabyte storage devices, high megapixel count digital cameras etc., USB 2.0 may not be fast enough. Furthermore, no USB 2.0 connection could ever come close to the 480Mbps theoretical maximum throughput, making data transfer at around 320Mbps (40MB/s) —...
  • Page 55: Ddr4

    Microsoft announced that Windows 7 would have USB 3.1 Gen 1 support, perhaps not on its immediate release, but in a subsequent Service Pack or update. It is not out of the question to think that following a successful release of USB 3.1 Gen 1 support in Windows 7, SuperSpeed support would trickle down to Vista.
  • Page 56: Memory Errors

    Figure 3. Curved edge Memory Errors Memory errors on the system display the new ON-FLASH-FLASH or ON-FLASH-ON failure code. If all memory fails, the LCD does not turn on. Troubleshoot for possible memory failure by trying known good memory modules in the memory connectors on the bottom of the system or under the keyboard, as in some portable systems.
  • Page 57: 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 58 Table 5. General Option Description System Information Displays the following information: • System Information: Displays BIOS Version, Service Tag, Asset Tag, Ownership Tag, Ownership Date, Manufacture Date, Express Service Code and the Singed Firmware Update. • Memory Information: Displays Memory Installed, Memory Available, Memory Speed, Memory Channel Mode, Memory Technology, DIMM 1 Size, DIMM 2 Size, DIMM 3 Size and DIMM 4 Size.
  • Page 59 Option Description • COM4 (Disabled by default) SATA Operation Allows you to configure the operating mode of the integrated hard drive controller. • Disabled = The SATA controllers are hidden • AHCI (Enabled by default) • RAID ON = SATA is configured to support RAID mode (Disabled by default) Drives Allows you to enable or disable the various drives on-board: •...
  • Page 60 Table 8. Security Option Description Admin Password Allows you to set, change, and delete the admin password. System Password Allows you to set, change, and delete the system password. Internal HDD-0 Password Allows you to set, change, and delete the computer’s internal HDD. Internal HDD-1 Password Allows you to set, change, and delete the computer’s internal HDD.
  • Page 61 Option Description • Disable (selected by default) • Enable Expert key Management Allows you to manipulate the security key databases only if the system is in Custom Mode. The Enable Custom Mode option is disabled by default. The options are: •...
  • Page 62 Option Description Fan Control Override Allows you to determine the speed of the system fan. When this option is enabled, the system fan runs at the maximum speed. This option is disabled by default. USB Wake Support Allows you to enable the USB devices to wake the computer from standby mode. The option "Enable USB Wake Support"...
  • Page 63: Updating The Bios In Windows

    SERR Messages Controls the SERR message mechanism. This option is set by default. Some graphics cards require that the SERR message mechanism be disabled. Dell Development Configuration This options is disabled by default. BIOS Downgrade Allows you to control flashing of the system firmware to the previous versions. This option is enabled by default.
  • Page 64: Updating Bios On Systems With Bitlocker Enabled

    Insert the USB Flash drive into the system that requires the BIOS update. Restart the system and press F12 when the Dell Splash logo appears to display the One Time Boot Menu. Using arrow keys, select USB Storage Device and click Return.
  • Page 65: Flashing The Bios From The F12 One-Time Boot Menu

    Most Dell systems built after 2012 have this capability and you can confirm by booting your system to the F12 One-Time Boot Menu to see if BIOS FLASH UPDATE is listed as a boot option for your system. If the option is listed, then the BIOS supports this BIOS update option.
  • Page 66 The E5450A14.exe file is shown as an example in the following screenshot. The actual file name may vary. Once the file is selected, it will show in the file selection box and you can click the OK button to continue. System setup...
  • Page 67 Click the Begin Flash Update button. A warning box is displayed asking you if you want to proceed. Click the Yes button to begin the flash. System setup...
  • Page 68: Technical Specifications

    At this point the BIOS flash will execute, the system will reboot and then the BIOS flash will start and a progress bar will show the progress of the flash. Depending on the changes included in the update, the progress bar may go from zero to 100 multiple times and the flash process could take as long as 10 minutes.
  • Page 69: Processor

    Table 17. Chipset Specifications Feature Specification Chipset AMD B350 Chipset Processor Table 18. Processor Specifications Feature Specification Processor type • AMD Ryzen 7 PRO 1700 (OC/L2 Cache: 4 MB/16T/3.0 GHz/65 W) • AMD Ryzen 5 PRO 1500 (QC/L2 Cache: 2 MB/8T/3.5 GHz/65 W) •...
  • Page 70: Audio

    Feature Specification • 4 GB AMD Radeon R7 450 Audio Table 21. Audio Specifications Feature Specification Integrated Realtek HDA Codec ALC3234 Network Table 22. Network Specifications Feature Specification Integrated BCM5762B0KMLG Broadcom ethernet controller Expansion bus Table 23. Expansion Bus Specifications Feature Specification Bus type...
  • Page 71: Drives

    Drives Table 25. Drives Feature Specification Internally accessible • 2.5-inch SATA drive bay • 3.5-inch SATA drive bay • M.2 SATA and NVMe SSD External connectors Table 26. External Connectors Specifications Feature Specification Audio Front panel • Universal headset Rear panel •...
  • Page 72: Controls And Lights

    Controls and lights Table 27. Controls and lights Feature Specification Front of the computer Power button light White light — Solid white light indicates power-on state; slow blinking white light indicates sleep state of the computer. Drive activity light White light — Slow blinking white light indicates that the computer is reading data from or writing data to the hard drive.
  • Page 73: Physical Dimension

    Physical dimension Table 29. Physical dimensions Physical Tower Height 35 cm (13.8 inches) Width 15.4 cm(6.1 inches) Depth 27.4 cm (10.8 inches) Weight 7.93 kg (17.49 lbs) Environmental Table 30. Environmental Specifications Feature Specification Temperature range Operating 5 °C to 35 °C (41 °F to 95 °F) Non-Operating –40 °C to 65 °C (–40°F to 149 °F) Relative humidity (maximum)
  • Page 74: Troubleshooting

    Troubleshooting Diagnostic and Power LED codes Table 31. Power LED states Power LED light status Possible cause Troubleshooting steps The computer is either turned • Re-seat the power cable in off or is not receiving power or in the power connector on the back of the computer and Hibernation mode.
  • Page 75 NOTE: Amber LED blinking pattern : The pattern is 2 or 3 blinks followed by a short pause then X number of blinks up to 7. The repeated pattern has a long pause inserted in the middle. Example 2,3 = 2 amber blinks, short pause, 3 amber blinks followed by long pause then repeats.
  • Page 76 State State Name Blinking Amber Pattern Problem Description Suggested Resolution If customer can assist to troubleshoot, narrow down the issue with reseating memory and swapping a known good memory if available. If nothing works, replace the memory. 3 blinks > short pause > PCIe device configuration PCIe Device or Video activity is in progress or...
  • Page 77 State State Name Blinking Amber Pattern Problem Description Suggested Resolution If none of the memory failed, replace the motherboard. 3 blinks > short pause > Possible storage device Storage Subsystem configuration in progress failure 4 blinks > long pause > or storage subsystem repeats failure.
  • Page 78: Enhanced Pre-Boot System Assessment - Epsa Diagnostics

    State State Name Blinking Amber Pattern Problem Description Suggested Resolution If identified any of the component failed, replace the component. If none of the component failed, replace the motherboard. 3 blinks > short pause > Memory subsystem Possible memory failure configuration activity is in 7 blinks >...
  • Page 79: Getting Help

    Dell product catalog. Dell provides several online and telephone-based support and service options. Availability varies by country and product, and some services may not be available in your area. To contact Dell for sales, technical support, or customer service issues: Go to Dell.com/support.
  • Page 80: Troubleshooting

    Troubleshooting Troubleshooting...

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