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Repair GuideDell

Dell Precision 3551 Laptop Complete Disassembly Upgrade Guide Ram Ssd Battery Lcd Replacement

The Dell Precision 3551 is a powerful mobile workstation designed for professionals needing reliable performance in the field. This 15-inch laptop supports upgrades to RAM, storage, battery, and display, making it highly customizable for demanding creative and engineering workflows.

By SellBroke TeamAugust 4, 2025
Device specs
RAMUp to 64GBDDR4 · 2 slots
StorageM.2 NVMePCIe 3.0 · 1 slot
Battery97 WhReplaceable

What You Can Upgrade

01
RAM
The Dell Precision 3551 has 2 SO-DIMM DDR4 slots supporting up to 64GB total. Native support for DDR4-2666 memory, though faster modules may work. Both slots are accessible after base cover removal.
Easy
02
SSD
Single M.2 2280 NVMe slot supporting PCIe 3.0 drives. Accommodates both SATA and NVMe protocols. Easily accessible after removing the base panel without disconnecting any cables.
Easy
03
Battery
97 Wh 6-cell lithium polymer battery with connector plug. Requires removal of base panel and disconnect of battery cable. Moderate difficulty due to multiple screws and careful cable handling needed.
Moderate
04
LCD Display
15.6-inch FHD or 4K display options. Requires removal of bezel trim, disconnection of display cable and antenna connectors. More involved than RAM or SSD upgrade due to display panel fragility.
Moderate
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Common Questions

Can I upgrade the RAM on the Dell Precision 3551?+
Yes. The Dell Precision 3551 has 2 SO-DIMM DDR4 slots that support up to 32GB per slot for a maximum of 64GB total. Standard DDR4-2666 memory is supported.
What SSD does the Dell Precision 3551 use?+
The Dell Precision 3551 uses a single M.2 2280 NVMe slot with PCIe 3.0 support. Both NVMe and SATA M.2 drives are compatible.
Is the battery replaceable on the Dell Precision 3551?+
Yes, the battery is fully replaceable. It is a 97 Wh 6-cell lithium polymer battery with a simple connector plug that disconnects easily after removing the base panel.
What tools do I need to disassemble the Dell Precision 3551?+
You will need a Phillips head screwdriver and a plastic pry tool or spudger for safely removing the base panel and bezel. Anti-static wrist strap recommended when handling internal components.

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