I use this in tandem with a NiftyDrive on my MacBook Pro. For those of you who don't know, the Nifty Drive is a small adapter made from machined aluminum that fits seamlessly into your Mac's SSD slot. With a 128 GB Micro SSD you can add hard drive space very inexpensively. I put my entire DropBox folder (over 100 gbs) on this thing, and it is every bit as fast as the Mac's internal SSD. In fact, I think it might be faster.