SSD for Dell Vostro 3590

Crucial has compatible SSDs for your laptop. The M.2 drives will be faster than the SATA drives. You can choose other brands, but that page will give you an idea and also Crucial drives are guaranteed compatible.

For installation, follow the steps in Dell's Service Manual. I would have linked directly to the manual for your model, but the correct manual depends upon whether your laptop has an optical drive or not. This page has links to both Service Manuals.

Whenever touching components or working inside a computer, wear a grounded wrist strap, also called anti-static wrist strap, ESD wrist strap, or ground bracelet. It's a cheap and sensible precaution. Rest the laptop on an anti-static mat or at least a reasonable alternative such as corrugated cardboard.

Yes, it will work. But, if you choose one of the Crucial SSDs for your laptop, the M.2 PCIe drives will be faster than the Western Digital SATA drive.

The Crucial drives are guaranteed compatible with your laptop.

I advise to stay away from any SSD that has 256 GB, they usually do not cost significantly less than a 512 GB one and you will be better off also skipping these models. 256 GB and 512 GB models are price wise suboptimal.

My recommendation would be to opt for a one TB (1000 GB) SSD that does not have a record for generating a lot of heat. Cooling an SSD is almost impossible inside of a notebook and if operating temperatures inside of an SSD reach 70 to 80 or more degrees celsius, the SSD will slow down the write speed to the extreme.

Be advised to check if the SSD you would like to install in a Dell notebook is cool running, meaning check if the model you pick requires extra cooling and if yes, do not install it in a notebook.

Look out for recommended drives that to not heat up during access, these drives will last longer and will also deliver the speed you intend to pay for.