http://bigbruin.com/content/zalmanz9plus_5
Installing an optical drive isn't difficult, however the front panel needs to be removed. Like most cases, the drive bays are covered not only by a piece of metal, but also by drive bay covers. The drive bay covers have a filter in them to provide clean, dust free air flow. Many cases are choosing to go tool-less for installing optical drives, Zalman is semi-tool-less as you need to use screws, however Zalman has included thumbscrews for this task.