Why pay Apple prices when you can get the same thing in black for less? Just follow the instructions published here and everywhere to format the drive when you first get it to work efficiently with your Macbook. It is small, light and does not require a wall wart. I hate wall warts and any product that does away with them is a plus in my book.  Put all your excess junk, Logic files, photoshop (if you are still using photoshop anymore) and all the big stuff and free up your hard drive. Access is fast and 1 TB is quite a bit of storage! 

Question: How is the capacity?
Answer: the big stuff and free up your hard drive