I use a Lacie Rugged 4T portable hard drive case. This Lacie model is a relatively large (thick) portable drive. The drive fits into the case, but quite tightly. If I could make a recommendation to the manufacturer, I would increase the length, width, and thickness about 1/4 inch. Otherwise it works great and protects my valuable photo files. If the case were a bit bigger I would give it 5 stars.