Dell Latitude 5540 upgrades
Use DDR4-3200 SO-DIMMs on the i5-1345U; DDR5 kits will not work. The Wi-Fi (M.2 2230) and optional WWAN (M.2 3042/3052) slots are not storage slots.
- SO-DIMM memory slots: 2 × DDR4 SO-DIMM · up to 64 GB total · 3200 MT/s
- M.2 Slot 1 (2230/2280 SSD): SSD M.2 2230 / M.2 2280 (NVMe)
- M.2 Slot 2 (2230 SSD, optional dual storage): SSD M.2 2230 (NVMe)
SO-DIMM memory slots 2 × DDR4 SO-DIMM · up to 64 GB total · 3200 MT/s
i5-1345U (U-series) uses DDR4-3200 only; DDR5 is for P-series models. Modules come in 8, 16 or 32 GB. Use two matched modules for dual-channel. ECC support is not stated in the sources; use standard non-ECC SO-DIMMs.
| $/GB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $3.48 | $27.82 | 8 GB | Crucial 8GB DDR4-2400 SO-DIMM DDR4-2400 CL17 SO-DIMM | Used | eBay US +2 | View deal |
| $4.37 | $34.95 | 8 GB | Crucial 8GB DDR4-2400 SO-DIMM DDR4-2400 CL17 SO-DIMM | New | eBay US +2 | View deal |
| $4.37 | $69.99 | 16 GB | Crucial 16GB DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | Used | eBay US +2 | View deal |
| $4.97 | $159.00 | 32 GB | Crucial 32GB DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | Used | eBay US +2 | View deal |
| $5.47 | $175.00 | 2 × 16 GB | Crucial 32GB Kit (2 × 16GB) DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | Used | eBay US +1 | View deal |
| $6.22 | $199.00 | 32 GB | Crucial 32GB DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | New | eBay US +2 | View deal |
| $7.00 | $112.06 | 16 GB | Crucial 16GB DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | New | eBay US +2 | View deal |
| $7.50 | $29.99 | 4 GB | Crucial 4GB DDR4-2666 SO-DIMM DDR4-2666 CL19 SO-DIMM | New | eBay US +2 | View deal |
| $8.12 | $259.99 | 2 × 16 GB | Crucial 32GB Kit (2 × 16GB) DDR4-3200 SO-DIMM DDR4-3200 CL22 SO-DIMM | New | eBay US +2 | View deal |
| $8.94 | $35.78 | 4 GB | Crucial 4GB DDR4-2666 SO-DIMM DDR4-2666 CL19 SO-DIMM | Used | eBay US +1 | View deal |
M.2 Slot 1 (2230/2280 SSD) SSD M.2 2230 / M.2 2280 (NVMe)
PCIe Gen4 x4 NVMe. Dell lists up to 2 TB for 2230 and 1 TB for 2280 options; self-encrypting 2230 drives go up to 256 GB. Gen3 drives are reportedly also fine. SATA is not listed.
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $75.00 | $299.99 | 4 TB | Crucial P3 Plus 4TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $107.50 | $215.00 | 2 TB | Crucial P3 Plus 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $119.50 | $239.00 | 2 TB | Crucial P3 Plus 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | New | eBay US +2 | View deal |
| $119.50 | $239.00 | 2 TB | Crucial P3 Plus 2TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Refurbished | eBay US +1 | View deal |
| $120.00 | $120.00 | 1 TB | Crucial P3 1TB M.2 2280 NVMe (Gen3) M.2 2280 SSD · NVMe Gen3 | Used | eBay US +1 | View deal |
| $125.00 | $499.99 | 4 TB | Samsung 990 PRO 4TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $127.99 | $127.99 | 1 TB | Kingston NV3 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | Used | eBay US +2 | View deal |
| $129.99 | $129.99 | 1 TB | Crucial P3 1TB M.2 2280 NVMe (Gen3) M.2 2280 SSD · NVMe Gen3 | New | eBay US +2 | View deal |
| $135.00 | $540.00 | 4 TB | WD_BLACK SN850X 4TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen4 | New | eBay US +2 | View deal |
| $148.00 | $148.00 | 1 TB | Samsung 970 EVO Plus 1TB M.2 2280 NVMe M.2 2280 SSD · NVMe Gen3 | Used | eBay US +2 | View deal |
M.2 Slot 2 (2230 SSD, optional dual storage) SSD M.2 2230 (NVMe)
Takes 2230 drives only. Optional dual-storage configuration, so check that your unit has this slot present and wired before buying a second drive. Some older manual copies mention only one 2230 slot.
| $/TB | Price | Capacity | Product | Condition | Store | Link |
|---|---|---|---|---|---|---|
| $288.69 | $577.38 | 2 TB | WD_BLACK SN770M 2TB M.2 2230 NVMe M.2 2230 SSD · NVMe Gen4 | New | eBay US +2 | View deal |
| $454.99 | $454.99 | 1 TB | WD_BLACK SN770M 1TB M.2 2230 NVMe M.2 2230 SSD · NVMe Gen4 | New | eBay US +2 | View deal |
| $585.27 | $585.27 | 1 TB | WD_BLACK SN770M 1TB M.2 2230 NVMe M.2 2230 SSD · NVMe Gen4 | Used | eBay US | View deal |