Not sure about additional mounting hardware, but the optical drive would have to include the matching front bezel in order to match the front of the computer, which most likely will not be included, unless it is incorporated in the knockout cover for the drive bay.
It would probably be a better idea to use an external optical drive instead. Depending on your needs, a slim external USB optical drive will achieve the same functions and transfer speeds as the internal drive that would have been included with your computer. You can also purchase a standard 5.25" internal optical drive and install it in an external enclosure, which you can also connect via USB. The latter will be bulkier, require its own power supply, cost more in total and require some assembly, but would be a better option if you plan on using the optical drive occasionally or want transfer speeds beyond 24x(CD)/8x(DVD).
