Dell Inspiron 5490
Yes. 2 slots, up to 20 GB seen working.
It takes DDR4-2666 laptop-size sticks (SO-DIMM).
- Slots
- 2 SO-DIMM slots
- Type
- DDR4-2666 260-pin SO-DIMM
- Most seen working
- 20 GB in two or more machines
- Firmware says
- 32 GB maximum (often wrong, so we show what machines run)
- How sure
- 20 of 20 reports show this layout
Worked out from 20 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.
Batteries in these laptops report 51 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 20 battery readings. Sources and method. Updated 9 Nov 2026.
IllustrationQuestions
Can I upgrade the RAM in the Dell Inspiron 5490?
Yes. 2 slots, up to 20 GB seen working. It takes DDR4-2666 laptop-size sticks (SO-DIMM).
What type of RAM does the Dell Inspiron 5490 use?
DDR4-2666 laptop-size sticks (SO-DIMM, 260-pin).
How much RAM can the Dell Inspiron 5490 take?
Machines in the reports run up to 20 GB. The firmware reports a maximum of 32 GB, a figure that is often wrong.
What battery does the Dell Inspiron 5490 use?
Batteries in these laptops report 51 Wh, going by 20 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 Inspiron 5490.