Our m4 128GB sample was the bare drive model, but we've seen the accessory package before with the C300 last year. There isn't a lot of information on the front of the package, but Crucial placed it all on the back.
On the back of the package we found quite a bit of general information including how to get to the support area on Crucial's website.
The inner package consists of a plastic surround that keeps the drive from moving around during shipping. A paper manual is also included.