Dell ChengMing 3990 Setup Guide and Specifications
Summary
The Dell ChengMing 3990 Setup and Specifications Guide (Regulatory Model D20M, Type D20M005, Rev. A02, August 2021) covers initial computer setup, chassis overview with front and back panel views, and detailed technical specifications for this Dell desktop. The manual provides step-by-step hardware configuration instructions, port descriptions, and system specifications for users and IT personnel deploying the ChengMing 3990 in office and business environments.
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Cheng Ming 3990 Setup and specifications guide
Regulatory Model: D20M Regulatory Type: D20M005 August 2021 Rev. A02
Page Summary Contents For Dell ChengMing 3990 Setup Guide and Specifications
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Cheng Ming 3990 Setup and specifications guide Regulatory Model: D20M Regulatory Type: D20M005 August 2021 Rev. A02
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Notes, cautions, and warnings NOTE: A NOTE indicates important information that helps you make better use of your product. CAUTION: A CAUTION indicates either potential damage to hardware or loss of d...
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Contents Chapter 1: Set up your computer...................................................................................................5 Chapter 2: Chassis overview...................................
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System and setup password........................................................................................................................................... Assigning a system setup password.....
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Set up your computer Steps 1. Connect the keyboard and mouse. 2. Connect to your network using a cable, or connect to a wireless network. Set up your computer
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3. Connect the display. 4. Connect the power cable. Set up your computer
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5. Press the power button. 6. Finish Windows system setup. Follow the on-screen instructions to complete the setup. When setting up, Dell recommends that you: Connect to a network for Windows updates....
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Table 1. Locate Dell apps (continued) Resources Description Support Assist Support Assist is the smart technology that keeps your computer running at its best by optimizing settings, detecting issues,...
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Chassis overview Topics: Front view Back view Front view Figure 1. Front view 1. Optical Disk Drive 2. Power button 3. Hard drive activity light 4. Headset/Universal audio jack port 5. Four USB 3.2 Ge...
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Back view Figure 2. Back view 1. Line-out audio jack 2. HDMI port 3. VGA port 4. Two USB 2.0 port 5. Two USB 2.0 ports with Smart Power On 6. Expansion slot x 4 (1XPCI, 1XPCIex16, 2XPCIex1) 7. Power p...
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Technical specifications NOTE: Offerings may vary by region. The following specifications are only those required by law to ship with your computer. For more information about the configuration of you...
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Table 2. Processors (continued) Processors Wattage Core Thread Speed Cache Integrated graphics count count 10th Intel Core i3-10105 65 W 3.7 GHz to 4.4 GHz 6 MB Intel UHD Graphics 630 10th Intel Core ...
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Table 4. Memory specifications (continued) Description Values Minimum memory Memory size per slot 4 GB, 8 GB, 16 GB , 32 GB Configurations supported 4 GB (1 x 4 GB) 8 GB (1 x 8 GB, 2 x 4 GB) 12 GB (1 ...
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Table 6. Storage specifications Storage type Interface type Capacity 2.5 inch HDD, 5400 RPM SATA 3.0 Up to 2 TB 2.5 inch HDD, 7200 RPM SATA 3.0 Up to 1 TB 3.5 inch HDD 7200 RPM SATA 3.0 Up to 2 TB M.2...
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Table 8. Discrete graphics specifications (continued) Discrete graphics Controller External display support Memory size Memory Type NVIDIA Ge Force GT730 (Optional) DP 2 GB GDDR5 AMD Radeon R5430 (Opt...
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Ports and connectors Table 12. External ports and connectors Description Values External: USB 4 USB 3.2 Gen 1 Type-A ports (front) 4 USB 2.0 Type-A ports (Rear) Table 13. Internal ports and connectors...
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Table 14. Power supply unit specifications (continued) Description Values Storage -40°C to 70°C (-40°F to -40°C to 70°C (-40°F to Dimensions and weight Table 15. Dimensions and weight Description Valu...
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Data security Table 18. Data security Data security options Values Safe Guard and Response, powered by VMware Carbon Black Supported and Secureworks Next Generation Antivirus (NGAV) Supported Endpoint...
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Table 21. Accessories (continued) Accessories Dell Professional Sound Bar—AC511M Keyboard and mouse Black, Dell Wireless Keyboard and Mouse, Persian - KM636 Monitor Dell 22 Monitor - P2219H Dell 22 Mo...
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Table 24. Computer environment Description Operating Storage Temperature range 0°C to 35°C (32°F to 95°F) -40°C to 65°C (-40°F to 149°F) Relative humidity (maximum) 10% to 90% (non-condensing) 0% to 9...
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Software This chapter details the supported operating systems along with instructions on how to install the drivers. Topics: Drivers and downloads Drivers and downloads When troubleshooting, downloadi...
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System setup System setup enables you to manage your hardware and specify BIOS level options. From the System setup, you can: Change the NVRAM settings after you add or remove hardware View the system...
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Table 25. Navigation keys (continued) Keys Navigation Spacebar Expands or collapses a drop-down list, if applicable. Tab Moves to the next focus area. NOTE: For the standard graphics browser only. Esc...
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Table 26. General Option Description System Information Displays the following information: System Information: Displays BIOS Version, Service Tag, Asset Tag, Ownership Date, Manufacture Date, and the...
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Table 27. System Configuration (continued) Option Description Enable Boot Support Enable Front USB Ports Enable Rear USB Ports All the options are enabled by default. Front USB Configuration Allows yo...
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Table 29. Security (continued) Option Description System Password Allows you to set, change or delete the system password. NOTE: Successful password changes take effect immediately. Default Setting: N...
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Table 30. Secure Boot (continued) Option Description db dbx If you enable the Custom Mode, the relevant options for PK, KEK, db, and dbx appear. The options are: Save to File- Saves the key to a user-...
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Table 33. Power Management (continued) Option Description Enable Intel Speed Shift The option is enabled by default Technology Auto On Time Sets time to automatically turn on the computer. Time is kep...
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Table 36. Maintenance (continued) Option Description Asset Tag Allows you to create a system asset tag if an asset tag is not already set. This option is not set by default. SERR Messages The option i...
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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 t...
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BIOS Update You can run the BIOS update file from Windows using a bootable USB drive or you can also update the BIOS from the F12 One-Time boot menu on the computer. Most of the Dell computers built a...
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About this task To enter the system setup, press F12 immediately after a power-on or reboot. Steps 1. In the System BIOS or System Setup screen, select Security and press Enter. The Security screen is...
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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 41. Self-help resources Self-help resources R...
Manual Details
| Brand | Dell |
|---|---|
| Pages | 33 |
| File Size | 2.86 MB |
| Published | June 18, 2026 |
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Frequently Asked Questions
How do I clear or reset my system or BIOS passwords?
To clear the system or BIOS passwords, you must contact Dell technical support using www.dell.com/contactdell.
Where should I go if I need detailed product help and diagnostics?
You can visit www.dell.com to use self-help resources including My Dell app for information on products and services.
How do I find specific support documents for my computer model?
Enter your Service Tag or Express Service Code at www.dell.com/support to view relevant support resources.
What advanced memory types are supported by this system?
The technical specifications include support for Intel Optane memory, in addition to standard memory options.