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Repair GuideDell

Dell Precision 3490 complete teardown. Replace and upgrade: RAM, SSD, LCD & more. DIY test & repair.

The Dell Precision 3490 is a professional workstation laptop featuring an Intel Core Ultra 165H processor and NVIDIA RTX 500 ADA graphics. This model offers excellent upgrade potential for RAM, SSD, and LCD display replacements, making it ideal for users looking to boost performance and storage capacity.

By SellBroke TeamFebruary 27, 2026Video guide
Device specs
RAMUp to 96GBDDR5 · 2 slots
StorageM.2 NVMePCIe 4.0 · 2 slots
Battery54WhReplaceable
Display14-inchFHD/QHD · IPS

What You Can Upgrade

01
RAM
The Precision 3490 features two DDR5 SODIMM slots supporting up to 96GB total capacity. Both slots are easily accessible after removing the base cover, making RAM upgrades straightforward for this professional workstation.
Easy
02
SSD
This model includes two M.2 NVMe slots supporting PCIe 4.0 drives. Both storage slots are accessible from the bottom panel, allowing users to upgrade or add additional storage without major disassembly.
Easy
03
LCD Display
The 14-inch IPS display can be replaced by removing the bezel and display hinges. The LCD panel is connected via a standard ribbon cable that disconnects easily, making display replacement achievable for most users.
Moderate
04
Thermal Paste
Repasting the Intel Core Ultra 165H CPU and RTX 500 ADA GPU requires removing the heatsink assembly and cooling system. This improves heat dissipation, reduces thermal throttling, and maintains optimal performance during intensive workloads.
Advanced

Tools You Need

Phillips #0 screwdriverPhillips #1 screwdriverPlastic pry toolAnti-static wrist strapThermal paste and spreader
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Common Questions

Can I upgrade the RAM on the Dell Precision 3490?+
Yes, the Precision 3490 has two DDR5 SODIMM slots that support up to 96GB total capacity. Both slots are easily accessible from the bottom panel after removing a few screws.
What SSD does the Dell Precision 3490 use?+
The Precision 3490 uses M.2 NVMe SSDs with PCIe 4.0 support. It has two M.2 slots available, both accessible from the bottom of the laptop for easy upgrades or replacements.
Is the battery replaceable on the Dell Precision 3490?+
Yes, the 54Wh battery is replaceable. It is accessible after removing the base cover and is held in place with a simple connector, making battery replacement a straightforward DIY task.
What tools do I need to open the Dell Precision 3490?+
You will need Phillips #0 and #1 screwdrivers, a plastic pry tool for safely opening the case, and an anti-static wrist strap to protect components from static discharge during disassembly.
How difficult is it to disassemble the Dell Precision 3490?+
The Precision 3490 is moderately easy to disassemble. The base cover removal gives access to RAM and SSD slots, while LCD replacement and thermal paste work require more care but remain achievable for users with basic technical skills.

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