Dell Latitude 5421
Yes. 2 slots, up to 64 GB seen working.
It takes DDR4-3200 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-3200 260-pin SO-DIMM
- Most seen working
- 64 GB in two or more machines
- Firmware says
- 64 GB maximum
- SSD slots
- At least 1 M.2 SSD slot listed by the firmware
- How sure
- 15 of 15 reports show this layout
Worked out from 15 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 64 Wh.
That is the design capacity the batteries themselves report, and the label can read 1 to 3 Wh higher. Other pack sizes may have shipped, so check the capacity printed on yours before you order.
From 15 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the Dell Latitude 5421?
Yes. 2 slots, up to 64 GB seen working. It takes DDR4-3200 laptop-size sticks (SO-DIMM).
What type of RAM does the Dell Latitude 5421 use?
DDR4-3200 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the Dell Latitude 5421 take?
Machines in the reports run up to 64 GB. That matches the 64 GB maximum the firmware reports.
Does the Dell Latitude 5421 have an M.2 SSD slot?
Yes. The firmware lists at least 1 M.2 SSD slot, in 15 reports. Some firmware leaves a slot out, so there may be more.
What battery does the Dell Latitude 5421 use?
Batteries in these laptops report 64 Wh, going by 15 reports. Other pack sizes may have shipped, so check the capacity printed on yours.
Is this my laptop?
Check the model name on the label underneath. It should read Latitude 5421.