Hi BERNARD,

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Any 2.5" SSD should fit so it just comes down to what performance and capacity you're looking for.  I replaced the 1TB spin drive that came with it with a budget Toshiba Q series SSD.

That said, there was one issue I encountered, although I'm not sure if that was with the Inspiron 15 rather than the 17 I bought at the same time. They had 2 slightly different caddy designs and one was more difficult to make fit than the other.

The issue was that the inside radii in the 4 corners of the caddy were rather large, while the outer corners of the SSD were rather sharp, resulting in that the caddy would barely wrap around the SSD and sit extremely tight.  I solved most of the problem by removing material from the caddy corners using a small file.  Of course I could only go so far without taking off too much material making the wall too thin so it would break.

I'm sure there are drives that don't have these sharp corners and the only way to find out is to try.