Dell Laptop Upgrade Guide (2026) — RAM, SSD & Charger Compatibility

Dell is one of the most popular laptop brands in the UK for both business and personal use. Whether you own an XPS ultrabook, a Latitude business machine, or an Alienware gaming rig, this guide covers the upgrade compatibility for every current Dell laptop series — which RAM fits, which SSD works, and which charger you need.

The short version: Dell’s upgradeability varies dramatically by series. The Latitude and Precision lines are the most upgrade-friendly, while the XPS 13, 14, and 16 have moved almost entirely to soldered RAM. Read on for the full breakdown.

Dell Laptop Upgrade Compatibility — Quick Reference

Dell XPS Series — Upgrade Guide

The XPS line has moved heavily towards soldered components in 2024–2025. The XPS 13, XPS 14, and XPS 16 all use soldered LPDDR5X memory that cannot be upgraded after purchase. Only the XPS 15 retains user-accessible SO-DIMM slots — making it the last truly upgradeable XPS.

XPS 13 (9340/9345)

The current XPS 13 uses soldered LPDDR5X RAM configured at the factory (16GB, 32GB, or 64GB). The SSD is a single M.2 2280 NVMe Gen 4 slot that can be replaced, though it requires removing the bottom panel. The charger is a compact 45W USB-C PD unit — any 45W+ USB-C PD charger will work as a replacement.

Upgrade options: SSD only (M.2 2280 NVMe). RAM is not upgradeable.

XPS 15 (9530/9540)

The XPS 15 is the upgrade-friendly exception in the XPS range. It features two DDR5 SO-DIMM slots supporting up to 64GB (2×32GB) at 5600 MHz, plus two M.2 2280 NVMe slots. The 130W USB-C PD charger can be replaced with any 100W+ USB-C PD charger — though full performance under load may require the original 130W.

Recommended RAM:

Buy DDR5 5600MHz SO-DIMM for XPS 15 on Amazon

XPS 14 and XPS 16

Both models use soldered LPDDR5X — choose your RAM at purchase. The XPS 14 takes a 90W USB-C charger, the XPS 16 takes 130W. Both have a single M.2 2280 NVMe SSD slot and Thunderbolt 4 ports.

Dell Latitude Series — Upgrade Guide

The Latitude range is Dell’s most upgrade-friendly laptop line. Every current model features user-accessible DDR5 SO-DIMM slots, standard M.2 2280 NVMe SSD slots, and USB-C PD charging. These are the laptops IT departments buy specifically because they’re easy to service and upgrade.

Latitude 5450/5550 (Business)

Two DDR5-5600 SO-DIMM slots, up to 64GB. Single M.2 2280 NVMe Gen 4 slot. 65W USB-C PD charger. No Thunderbolt — standard USB-C only. This is Dell’s workhorse business laptop with excellent upgradeability at a mid-range price.

Latitude 7450/7550 (Premium Business)

Same RAM upgradeability as the 5000 series but with better build quality, optional Thunderbolt 4, and some configurations offering two M.2 SSD slots. The charger ranges from 65W to 90W USB-C PD depending on the processor configuration.

Buy Dell Latitude RAM Upgrades on Amazon

Dell Inspiron Series — Upgrade Guide

The Inspiron range covers Dell’s consumer laptops. Upgradeability varies by model — the Inspiron 15/16 Plus (DDR5 variants) have two SO-DIMM slots, while some budget Inspiron 14 models have partially soldered RAM. Always check the specific model number before purchasing upgrade parts.

Most Inspiron models use a single M.2 2280 NVMe SSD and a 45–65W USB-C PD charger. The Inspiron 16 Plus may have two M.2 slots in higher configurations.

Dell Alienware Series — Upgrade Guide

Alienware gaming laptops offer the best upgradeability in Dell’s lineup. The m16 and m18 both feature two DDR5 SO-DIMM slots (up to 64GB) and two M.2 NVMe SSD slots supporting up to 8–10TB of combined storage.

Important charger note: Alienware laptops use proprietary 7.4mm barrel plug chargers at 280–330W — not USB-C. The Alienware m16 R2 needs a 280W adapter, the m18 R2 needs 330W. Third-party barrel plug replacements are available but must match the exact voltage (19.5V) and wattage.

Buy DDR5 64GB Kits for Alienware on Amazon

Dell G-Series — Upgrade Guide

The G15 and G16 are Dell’s mid-range gaming laptops with solid upgradeability. Both have two DDR5 SO-DIMM slots (up to 32GB) and at least one M.2 2280 NVMe slot. Like Alienware, they use barrel plug chargers (130–180W) rather than USB-C.

Older G15 models (5520 and earlier) use DDR4 SO-DIMM — check your generation before buying RAM.

Dell Precision Series — Upgrade Guide

Dell’s Precision workstation laptops are built for maximum upgradeability. The Precision 7690 stands out with four DDR5 SO-DIMM slots supporting up to 128GB — the highest RAM capacity in Dell’s laptop range. Both the 5000 and 7000 series have two M.2 NVMe SSD slots.

Precision workstations support both barrel plug and USB-C PD charging (180–240W). They all include Thunderbolt 4 ports, making them compatible with any Thunderbolt dock for multi-monitor setups.

Dell Charger Compatibility

For USB-C models, any third-party USB-C PD charger matching or exceeding the required wattage will work. See our laptop charger compatibility guide for recommended chargers.

Dell Docking Station Compatibility

All current Dell XPS, Latitude, and Precision laptops support Thunderbolt 4 docking stations. Alienware and G-Series have at least one Thunderbolt 4 port alongside proprietary power connectors. Dell’s own WD22TB4 dock is popular in enterprise, but third-party Thunderbolt 4 docks from CalDigit, Anker, and Plugable work equally well.

See our laptop docking station compatibility guide for recommended docks.

Recommended Upgrade Parts for Dell Laptops

Browse Dell Laptop SSD Upgrades on Amazon

Frequently Asked Questions

Can I upgrade the RAM in my Dell XPS 13?

No. The current Dell XPS 13 (9340 and 9345) uses soldered LPDDR5X memory that cannot be replaced or upgraded. You must choose your RAM amount (16GB, 32GB, or 64GB) when you buy the laptop. The SSD can still be upgraded.

What RAM does a Dell Latitude 5450 use?

The Latitude 5450 uses DDR5-5600 SO-DIMM in two user-accessible slots, supporting up to 64GB (2×32GB). Any DDR5 SO-DIMM module at 5600MHz or below will work — we recommend buying a matched pair for dual-channel performance.

Can I use a USB-C charger with an Alienware laptop?

Alienware laptops primarily use barrel plug chargers at 280–330W. While some models have a USB-C port that supports PD charging, it’s limited to lower wattage (typically 100W) and won’t sustain the laptop under gaming load. You need the barrel plug charger for full performance.

What SSD size do Dell laptops use?

Nearly all current Dell laptops use the M.2 2280 NVMe form factor with PCIe Gen 4. Both Samsung 990 Pro and WD Black SN850X are excellent choices. Gen 4 drives are backward compatible with Gen 3 slots in older Dell models.

Which Dell laptops are the most upgradeable?

The Precision 7690 (4 RAM slots, 128GB max, 2 SSD slots) and Alienware m18 (2 RAM slots, 64GB, 2 SSD slots) are the most upgradeable. For business use, the Latitude 7550 offers the best balance of upgradeability and portability.

Recommended Products

These are the products we recommend based on this guide. All links go to Amazon UK where you can check current prices and availability.

Prices and availability may vary. As an Amazon Associate, we earn from qualifying purchases.

Related Guides

• Ram Compatibility
• Ssd Compatibility
• Charger Compatibility
• Dock Compatibility
• Dell G15 5540