Dell Precision 7875 Tower Fixed Workstation System Guide

Summary: This article provides information about how to set up and use your Dell Precision 7875 Tower Fixed Workstation. Learn how to run a hardware diagnostic test, download, and install drivers and more. Find troubleshooting resources to resolve common issues. ...

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Instructions

Precision 7875 Tower Fixed Workstation Product Shot

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Getting Started with your Dell Precision 7875 Tower Fixed Workstation Dell Precision 7875 Tower Fixed Workstation Setup, Specifications, and Service Manual Dell Drivers & Downloads Warranty and Support Services Frequently Asked Questions
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Technical specifications

Table 1: Technical specifications of the Dell Precision 7875 Tower Fixed Workstation
Description Values
Dimension
NOTE: The weight of your computer depends on the configuration that you bought.
  • Height:
    • 442.70 mm (17.42 in.)
    • With rubber foot protruding - 446.60 mm (17.58 in.)
  • Width:
    • 172.60 mm (6.79 in.)
    • With rubber foot protruding - 176.50 mm (6.94 in.)
  • Depth:
    • 465.00 mm (18.30 in.)
    • With lock structure protruding - 487.50 mm (19.19 in.)
  • Weight:
    • Minimum - 18.34 kg (40.39 lb)
    • Maximum - 25.57 kg (56.34 lb)
Chipset
  • AMD PROM21
Processor
  • PRO 695
PCIe bus
  • Up to Gen 5.0
System Memory (RAM)
  • Number of slots - Eight DIMM slots
  • Type - DDR5 RDIMM
  • Speed - 4800 MT/s ECC or 5200 MT/s ECC (Supported with 5600 module)
  • Maximum memory - 2 TB
  • Minimum memory - 16 GB
  • Memory per slot - 16 GB, 32 GB, 32 GB, 64 GB, 128 GB, or 256 GB
Supported operating systems
  • Windows 11 (SV2)
  • Windows 11 (SV1)
  • Windows 10 (Version 22H2)
  • Red Hat Enterprise Linux 9.3
  • Ubuntu Linux 22.04 LTS (64-bit)

Ports on Dell Precision 7875 Tower Fixed Workstation

Table 2: Ports on the Dell Precision 7875 Tower Fixed Workstation
Description Values
Audio ports
  • One Headset (Headphone and Microphone Combo) Port (Front)
  • One Line-Out Audio Port (Rear)
Video ports
  • Using a Discrete GPU
Network ports
  • One RJ45 Ethernet Port 1 GbE (Rear)
  • One RJ45 Ethernet Port 10 GbE (Rear)
USB ports
  • Two USB 3.2 Gen1 Ports (Front)
  • One USB 3.2 Gen2 Type-C Port with PowerShare (Front)
  • One USB 3.2 Gen2 Type-C Port (Front)
  • Three USB 3.2 Gen2 Type-C Ports (Rear)
  • Two USB 3.2 Gen1 Ports (Rear)
  • One USB 3.2 Gen1 Port with SmartPower On (Rear)
PCIe expansion card slots (internal)
  • One full-height Gen4 PCIe x16 Slots
  • One full-height Gen5 PCIe x16 Slots
  • Two full-height Gen4 PCIe x8 Slots (open ended)
  • One full-height Gen5 PCIe x8 Slots (open ended)
  • One full-height, half-height Gen4 PCIe x8 Slots wired as x4 electrically (open ended)
SATA ports
  • Two SATA 3.0 slots for 2.5 -inch/3.5-inch Hard Drives 
  • Two SATA 3.0 slots for externally facing storage flex bays
  • One SATA 3.0 slot for the Optical Drive
mSATA ports
  • Not supported
M.2 ports
  • Not Supported
NVMe ports
  • Two M.2 2230/2280 slots for PCIe NVMe Gen4 solid state drives
  • Two M.2 2230/2280 slots for externally facing PCIe NVMe Gen4 storage flex bays
NOTE: You can learn more about the features of different types of M.2 card. Read the following knowledge base article: Differences Between M2 Cards M2 Slots Keys Sizes and Types

  1. Connect the keyboard and mouse to the computer.
  2. Connect the Ethernet cable to the computer, or connect to a wireless network (if applicable).
  3. Connect the monitor using the VGA, DVI, HDMI, or DisplayPort cable provided with the monitor.
  4. Connect the power cable to the computer.
  5. Press the power button and turn on the computer.
  6. Follow the instructions on the screen to complete the setup procedure.

Illustration of desktop setup
Figure 1: Animated illustration of setting up a desktop

Running a hardware diagnostic test can help you identify hardware-related problems and provide you with troubleshooting steps to help resolve the issue.

To determine if your Dell computer is experiencing a hardware problem, it is recommended that you first run a hardware diagnostic test.

How to run a hardware diagnostic test using Dell SupportAssist?

If the computer can boot into the operating system, run the hardware diagnostic test using Dell SupportAssist.

NOTE: SupportAssist is available for Windows computers only. If SupportAssist is not available on your Dell computer, download and install the SupportAssist app.
  1. Click Start.
  2. Open SupportAssist.
  3. Click Start Now.
  4. The default test scans the computer for hardware failure.

How to run a pre-boot system assessment test?

If the computer cannot boot into the operating system, run the pre-boot system assessment test.

NOTE: Some diagnostic tests are interactive and require the user to respond. If no response is provided, the test results may be inaccurate.
  1. Restart the computer.
  2. At the Dell logo, tap the F12 key several times until the One-time Boot Menu appears.
  3. Use the arrow keys to select Diagnostics and press the Enter key.
  4. Follow the on-screen prompts and respond appropriately to complete the diagnostics.
  5. If the test passes, the hardware components are working correctly.
  6. If the test fails, make a note of the error code, validation code, and service tag, and then look up the error code.

How to Run a Preboot Diagnostics on a Dell Computer

Watch this video to learn how to use the integrated preboot diagnostics to identify hardware issues on your Dell computer.

Duration: 00:01:34 (hh:mm:ss)
Closed captions: Available in multiple languages. Click the CC icon, and then select the preferred language.

NOTE: Dell provides tested and validated drivers that are developed for Dell products. These drivers are provided for operating systems that Dell validates and supports for each product. Dell Technologies recommends downloading drivers for third-party devices from the device manufacturer's website.

Downloading drivers using SupportAssist

NOTE: SupportAssist is available for Windows computers only. If SupportAssist is not available on your Dell computer, download and install the SupportAssist app.
  1. Click Start and type SupportAssist.
  2. Click the SupportAssist app in the search results.
  3. In the SupportAssist window, click Start now.
  4. SupportAssist automatically scans your computer, checks for driver updates, downloads, and installs the latest drivers (if available).
  5. SupportAssist also runs other automated tasks such as scan hardware, tune performance, optimize the network, and so on.

Downloading drivers from Dell Support website

  1. Go to the Dell Precision 7875 Tower Fixed Workstation drivers page.
  2. Click Check for Updates to allow Dell to automatically find driver updates for you.
  3. Alternatively, click Find drivers to manually locate and download the drivers using:
    • Keyword search box - Enter a keyword of the driver that you are looking for. (For example, BIOS, Chipset, Audio, Video.)
    • Operating System and Category filters - Select the operating system that is installed on the Dell computer and choose a driver category.
  4. Click the Download button next to the driver of your choice and save the file. Click Show All to see the remaining drivers.
  5. Using File Explorer (also known as Windows Explorer), browse to the location where the downloaded file was saved.
  6. Double-click the downloaded driver installation file and follow the on-screen instructions to complete the installation process.
  7. Repeat steps five to seven for other drivers (if required).
  8. After the driver installation is complete, restart the computer.

Dell Digital Locker

The Dell Digital Locker allows you to view and manage your products, software, subscriptions, and licensing information in one location. You can:

  • Download purchased software
  • Access licensed software products
  • Download updates and patches
  • Manage user and product groups
  • View software license entitlements
  • Manage warranty subscriptions

To access Dell Digital Locker, go to https://www.dell.com/support/software. For more information, see the frequently asked questions about Dell Digital Locker.

Dell Digital Delivery

Dell Digital Delivery is an easy and new way to buy software when you purchase a Dell computer. You can automatically download and install available software titles on select computers.

To learn more, go to the Dell Digital Delivery website.

Operating System Recovery Image

Do you want to reinstall the operating system due to a computer crash, hard drive replacement, or other serious software problem with your Dell computer?

The Dell operating system Recovery tool provides an interface to quickly download and create a bootable USB drive to reinstall the operating system. You can download the operating system recovery image that is customized for your Dell computer.

NOTE: The recovery image is available for the original operating system that was shipped with the Dell computer.

To download the Dell operating system Recovery Tool, go to https://www.dell.com/support/home/drivers/osiso/recoverytool.

Third-party apps

Need help with downloading and installing third-party apps such as Microsoft Teams, Skype, Adobe Reader and more?

You can download and install third-party apps from the Microsoft Store or the software manufacturer's website.

If your computer cannot boot to the operating system even after repeated attempts, it automatically starts SupportAssist OS Recovery.

SupportAssist OS Recovery is a stand-alone tool that is preinstalled in all Dell computers that are shipped with the Windows operating system. It consists of tools to diagnose and troubleshoot issues that may occur before your computer boots to 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.

CAUTION: Dell Technologies recommends backing up your data before you begin the recovery or reset process.
CAUTION: Formatting the hard drive of your computer deletes the SupportAssist OS Recovery environment.

Manually start SupportAssist OS Recovery

NOTE: If the SupportAssist OS Recovery user interface is displayed for the first time, click APPROVE to accept the privacy policy. A walkthrough option is also displayed. Click START WALKTHROUGH to learn about various options available in the tool, or click SKIP to skip the walkthrough process.
  1. Turn on or restart the computer.
  2. At the Dell logo, press the F12 key several times to access the One Time Boot Menu.
    NOTE: If the computer boots to the operating system, wait until you see the Windows desktop, restart the computer, and try again.
  3. Select SupportAssist OS Recovery, and then press Enter.
  4. Follow the instructions on the screen to scan, repair, backup files or reset the computer.

Learn more about how to Restore your computer using SupportAssist OS Recovery.

Bluescreen or STOP Error Icon

Bluescreen or STOP Errors

There are many reasons that a computer does not start up. It does not boot into the Windows operating system. It may display a blue screen or STOP error during operation.

Learn How to Troubleshoot Blue Screen or STOP Error Code on a Dell Computer.

Bluetooth Icon

Bluetooth

Are you experiencing the following Bluetooth issues on your Dell computer?

  • You cannot listen to music on a Bluetooth headset.
  • You cannot transfer files to Bluetooth-enabled devices such as mobile phones or other computers.

Follow the suggested quick steps to resolve Bluetooth-related issues.

Fan Icon

Fan and thermals

Are you experiencing the following thermal issues on your Dell computer?

  • The computer fans are running too fast or making a loud noise.
  • The computer restarts or shuts down intermittently.
  • You are seeing an error message that is related to fan, temperature, or heat sink.
  • The computers performance reduces unexpectedly.

Follow the suggested quick steps to resolve fan-related issues on your Dell desktop.

Keyboard Icon

Keyboard

Are you experiencing the following keyboard issues on your Dell computer?

  • One or more keys are not responding.
  • The keys are responding slowly.
  • Any key presses are typing characters intermittently or typing incorrect characters.

Follow the suggested quick steps to resolve keyboard-related issues.

Microphone Icon

Microphone

Are you experiencing the following sound or audio recording issues on your Dell computer?

  • Other users cannot hear you on Microsoft Teams, Skype, or Zoom call.
  • The sound or audio from the microphone is muffled, distorted, crackling, or popping, choppy, or intermittent.
  • The microphone volume is too low or no volume.

Follow the suggested quick steps to microphone-related issues.

Monitor Icon

Monitors and screens

Are you experiencing the following display issues on your Dell computer?

  • The screen does not turn on or the screen is blank or black.
  • The image on the screen is fuzzy, blurry, distorted, or faded.
  • There are horizontal or vertical lines on the screen.

Follow the suggested quick steps to resolve display-related issues on a Dell computer.

Mouse Icon

Mouse

Are you experiencing the following mouse or touchpad issues on your Dell computer?

  • The mouse cursor moves too slowly or erratically.
  • The mouse buttons are not responding.
  • The mouse cursor disappears.

Follow the suggested quick steps to resolve mouse or touchpad-related issues.

Performance Icon

Slow Performance

Are you experiencing the following performance issues on your Dell computer?

  • The computer takes a long time to boot.
  • Applications are loading slowly or stop responding.
  • Browsers and other applications stop responding.

Learn How to Troubleshoot Slow Performance Issues.

Speaker icon

Speakers or Headphones

Are you experiencing the following sound or audio playback issues on your Dell computer?

  • There is no sound coming from the speakers or headphones.
  • The sound or audio is muffled, distorted, crackling, or popping, choppy, or intermittent.
  • The volume is too low or there is no sound.

Follow the suggested quick steps to resolve speaker or headphone-related issues.

Touchscreen Icon

Touchscreen

Are you experiencing the following touch screen issues on your Dell computer?

  • The touch screen does not work.
  • The touch screen responds inaccurately or stops responding.

Learn How to Troubleshoot Touch-Screen or Touch-Panel Issues.

Web Camera Icon

Webcam

Are you experiencing the following webcam issues on your Dell computer?

  • The webcam does not work.
  • The webcam is not detected in applications such as Microsoft Teams, Skype, or Zoom.
  • The webcam image is fuzzy, dim, or grainy.

Follow the suggested quick steps to resolve webcam-related issues.

Network Icon

Wired networking

Are you experiencing the following wired network (Ethernet) issues on your Dell computer?

  • There is no Internet using a wired network or Ethernet connection.
  • There is a slow connection.

Follow the suggested quick steps to resolve wired networking issues.

Wireless Icon

Wireless networking

Are you experiencing the following Wi-Fi issues on your Dell computer?

  • You cannot connect to nearby Wi-Fi networks.
  • There is a slow connection.
  • The Wi-Fi connection is intermittent or the connection drops.
  • There is no Internet using Wi-Fi.

Follow the suggested quick steps to resolve wireless networking issues.

Learn how to view or download the Manuals and Documentation for your Dell Product.

Additional Information

Frequently Asked Questions

For more information, click to expand a section below.

Computer maintenance means keeping your desktop or all-in-one in a good condition both internally and externally. A well-maintained computer looks good, lasts longer, and performs reliably. Regular maintenance helps increase the lifespan of the computer and protect the privacy and security of your data.

See our Dell Desktop Best Practices for Care, Use, and Handling and General Maintenance Guidelines For a Dell Computer.

If your Dell computer does not turn on or boot into the operating system, it is recommended that you first perform a hard reset. Performing a hard reset fixes many problems and also drains residual power that may be causing the problem.

  1. Turn off the computer.
  2. Disconnect the power cable.
  3. Disconnect all devices such as USB drives, printers, webcams, and media cards (SD/xD), except keyboard and mouse.
  4. Press and hold the power button for 15-20 seconds to drain residual power.
  5. Connect the power cable and turn on the computer.

Running a hardware diagnostic test can help you identify hardware-related problems and provide you with troubleshooting steps to help resolve the issue.

The diagnostics section of this article provides step-by-step instructions on how to run the SupportAssist or preboot diagnostic tests on your computer.

WARNING: Dell Technologies recommends disconnecting any devices like external hard disk drives, printers, scanners before updating the BIOS.
NOTE: Learn more about: Dell BIOS Updates
NOTE: You must be logged in as an administrator to install the latest BIOS on your Dell computer.

Before you begin, temporarily suspend BitLocker protection in Windows. Learn: How to Enable or Disable BitLocker with TPM in Windows. BitLocker protection resumes automatically when the computer is restarted.

  1. Go to the Dell Precision 7875 Tower Fixed Workstation drivers page.
  2. Select the Operating System that is installed on the computer.
  3. Under Category, select BIOS.
  4. Locate the latest System BIOS.
  5. Click Download and save the file to your computer.
  6. Using File Explorer (also known as Windows Explorer), browse to the location where the downloaded file was saved.
  7. Double-click the downloaded BIOS setup file and follow the on-screen instructions to complete the installation process.
  8. The computer restarts and completes the BIOS update process.

The troubleshooting section of this article provides self-help resources to troubleshoot and resolve common issues on your Dell Precision 7875 Tower Fixed Workstation.

If the topic that you are looking for is not available, use the search bar at the top of this page.

Affected Products

Precision 7875 XL Tower, Precision 7875 Tower
Article Properties
Article Number: 000220297
Article Type: How To
Last Modified: 20 Mar 2025
Version:  2
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