Hardware & Documentation
The included accessories are simple but cover pretty much any need. I do have to say that the labeling on the screw bags is awesome as it helps to quickly identify screws vs taking each one out and giving it a look over to figure out what it may be for. All of these are listed in the manual which makes identification trivial as to its purpose. There are also ten total zip ties which is plenty for this small of a case and probably will allow you a few extra in case you mess up and have to add another cable to a bundle or reroute something.
The manual for the H500i is a multi-fold sheet which covers most of the major component installation. You will have to be somewhat versed in some things, but it has pictures that cover most parts. There is not much as far as helpful wording, but what is there is useful. The images are good enough to get your system build in the H500i without issues.