I am in love with this drive. It works BEAUTIFULLY with my macbook pro 13in with retina. I stupidly bought the Macbook without the hard drive before I started design school. I didn't know anything about file sizes and flash memory. So I bought this drive because my flash kept filling up, making me unable to use any of my software. I love that this drive works with my time machine app and will auto back up my computer. I bought the 1TB with the thunderbolt cable. If you spend the money on this product, you will NOT be sorry!