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Dell OptiPlex 7090 Tower User Manual

Dell OptiPlex 7090 Tower
104 pages
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OptiPlex 7090 Tower
Service Manual
Regulatory Model: D28M
Regulatory Type: D28M005
May 2021
Rev. A00

Table of Contents

Questions and Answers:

Dell OptiPlex 7090 Tower Specifications

General IconGeneral
Processor Options10th Gen Intel Core i3, i5, i7, i9
ChipsetIntel Q470 Chipset
MemoryUp to 128GB DDR4 2933MHz
Storage Options2.5-inch HDD/SSD, M.2 PCIe NVMe SSD
Graphics OptionsIntegrated Intel UHD Graphics
Operating SystemWindows 10 Home/Pro, Ubuntu Linux
PortsFront: USB 3.2 Gen 2 Type-C, USB 3.2 Gen 1; Rear: USB 2.0
Expansion Slots1 x PCIe x16, 1 x PCIe x4, 1 x PCIe x1
Power Supply260W, 300W or 500W
Dimensions293.0 mm

Summary

Working Inside Your Computer

Safety Instructions and Precautions

Covers safety guidelines, ESD protection, and handling sensitive components.

After Working Inside Your Computer

Steps to follow after completing internal computer work.

Removing and Installing Components

Tools, Screws, and Component Overview

Lists tools, screw types, and identifies major system components visually.

Side Cover and Front Bezel Procedures

Instructions for removing and installing the side cover and front bezel.

Storage Drive Replacement

Procedures for 2.5-inch and 3.5-inch hard drives, and M.2 SSDs.

Memory Module and Processor Fan/Heat Sink

Steps for replacing memory modules and processor fan/heat sink assemblies.

Processor, Graphics, and GPU Replacement

Instructions for replacing the processor, graphics card, and powered GPU.

Small Component Replacement

Procedures for coin-cell battery, WLAN card, and slim optical drive.

Chassis Fan, VR Heat Sink, Speaker, and Power Button

Steps for replacing chassis fan, VR heat sink, speaker, and power button.

Power Supply Unit (PSU) and Intrusion Switch

Procedures for removing and installing the power supply unit and intrusion switch.

I/O Modules and System Board

Instructions for replacing optional I/O modules and the system board.

Software

Drivers and Downloads

Information on obtaining and installing system drivers.

System Setup

Boot Menu and Navigation Keys

How to access and navigate boot menus and system setup.

System Setup Options Overview

Details system configuration settings available in BIOS.

System and Setup Passwords

Procedures for assigning and managing system and setup passwords.

Troubleshooting

Diagnostics and LED Behavior

Running pre-boot diagnostics and interpreting LED error codes.

Error Message Interpretation

Explanations for diagnostic and system error messages.

WiFi Power Cycle Procedure

Steps to perform a WiFi power cycle to resolve connectivity issues.

Getting Help and Contacting Dell

Self-Help Resources and Contact Information

List of resources and methods for obtaining Dell support.

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