Dell Vostro 3550

Laptop, from 2011 29 hardware reports
Memory
Up to 12 GB
2 laptop-size slots
SSD and charger
Coming next
Checked from separate sources
Upgradable

Yes. 2 slots, up to 12 GB seen working.

It takes DDR3-1333 laptop-size sticks (SO-DIMM).

Slots
2 SO-DIMM slots
Type
DDR3-1333 204-pin SO-DIMM
Most seen working
12 GB in two or more machines
Firmware says
16 GB maximum (often wrong, so we show what machines run)
How sure
29 of 29 reports show this layout
See 4 GB DDR3-1333 SO-DIMM on AmazonOpens an Amazon search for this exact spec.

Worked out from 29 hardware reports of this laptop. Sources and method. Updated 9 Nov 2026.

2 laptop-size slots
Illustration

Questions

Can I upgrade the RAM in the Dell Vostro 3550?

Yes. 2 slots, up to 12 GB seen working. It takes DDR3-1333 laptop-size sticks (SO-DIMM).

What type of RAM does the Dell Vostro 3550 use?

DDR3-1333 laptop-size sticks (SO-DIMM, 204-pin).

How much RAM can the Dell Vostro 3550 take?

Machines in the reports run up to 12 GB. The firmware reports a maximum of 16 GB, a figure that is often wrong.

Is this my laptop?

Check the model name on the label underneath. It should read Vostro 3550.