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

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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.

For the processor side of the question, see CPU upgrades on Dell laptops — which Dell models use socketed chips, and what to do when the CPU is soldered.

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. The 5000 series has user-accessible DDR5 SO-DIMM slots, but this is not true across the whole range — the premium 7000 series moved to soldered LPDDR5x. All use M.2 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 and 7650 (Premium Business)

Unlike the 5000 series, the Latitude 7450 has its memory soldered — Dell’s owner’s manual states the memory is integrated on the system board and is not upgradable, with LPDDR5x up to 64GB fixed at the point of purchase. Only the SSD can be changed afterwards. Build quality is better and Thunderbolt 4 is optional. There is no Latitude 7550. Dell’s premium 7000 line runs 7350, 7440, 7450 and 7455, with the 7650 as the large-screen model — so if a listing offers you memory for a “Latitude 7550”, check the service tag before you buy. If you want a Latitude you can actually add memory to, the 5000 series is the one: Dell’s owner’s manual for the Latitude 5550 specifies two SO-DIMM slots, DDR5 at 5600 MT/s on Core Ultra models, up to 64GB.

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 7680 stands out with a single Dell CAMM module supporting up to 128GB (or two SO-DIMM slots for up to 64GB via the optional interface board) — the highest RAM capacity in Dell’s laptop range. Note there is no Precision 7690: the 16-inch 7000-series workstation is the 7680 and the 17-inch is the 7780. The 7000 series has two M.2 NVMe SSD slots, while the Precision 5690 has LPDDR5x soldered to the board and cannot be upgraded at all.

Charging differs across the range. The Precision 5690 uses 100W or 165W USB-C — the 165W adapter runs a 28V Extended Power Range profile, so it needs a USB-IF 240W-rated cable — while the 7680 and 7780 use a 180W or 240W 7.4×5.1mm barrel adapter at 19.5V. Thunderbolt 4 is included across the range, so any Thunderbolt dock will work for multi-monitor setups, though a dock that delivers only 130W cannot meet the 5690’s 165W specification.

Dell Charger Compatibility

Going further: Dell identifies adapters through an ID pin, which is why an unrecognised charger throttles the machine rather than damaging it. Our Dell charger compatibility guide covers the wattage and connector for each current model.

Going further: Dell identifies adapters through an ID pin, which is why an unrecognised charger throttles the machine rather than damaging it. Our Dell charger compatibility guide covers the wattage and connector for each current model.

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

Going further: power delivery on a Dell dock depends on which AC adapter it shipped with, and non-Dell hosts are capped separately. Our Dell dock compatibility guide has the real figures for the WD19, WD22 and WD25 families.

Going further: power delivery on a Dell dock depends on which AC adapter it shipped with, and non-Dell hosts are capped separately. Our Dell dock compatibility guide has the real figures for the WD19, WD22 and WD25 families.

Thunderbolt 4 is common across the Dell XPS, Latitude 7000 and Precision lines, but it is not universal — the Latitude 5450 and 5550 expose USB-C without Thunderbolt, so check your own model’s port list before buying a Thunderbolt dock. 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?

Most current Dell laptops take an M.2 NVMe drive with PCIe Gen 4, but the slot on the XPS 13, XPS 15 and XPS 16 accepts either a 2230 or a 2280 drive, and lower-capacity configurations often ship with the shorter 2230 — check what is actually fitted before buying a replacement. 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 7680 (one Dell CAMM module to 128GB, or two SO-DIMM slots to 64GB via the optional interface board, 2 SSD slots) and the Alienware m18 (2 RAM slots, 64GB, 2 SSD slots) are the most upgradeable. For business use the Latitude 5450 or 5550 is the one to pick — it has two DDR5 SO-DIMM slots to 64GB, whereas the premium Latitude 7450 has its memory soldered.

Recommended Products

These are the products we recommend based on this guide. All links go to Amazon 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

Dell Models We Cover

We have detailed upgrade guides for 570+ Dell models across all major product lines. Here are some of the most popular:

Dell Latitude

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Dell Alienware

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