This first shot is looking at the case from the rear looking forward, on the left-side you have the bay for the dual 5.25" optical drives. These drives are hid behind the stealth door and with this case positioning the drives so they will open the stealth doors is simple, just push the drive till it butts up against the the door and actuator and then put some screws in drive to hold it in place.
The drive cage mounted on the opposite side is for a pair of hard drives or in our case one very large one. The cage is held in place with two screws and to remove it just slide the cage upward off the tracks that hold it in place.
Here is a close-up of another place where an 80mm fan can be located this opening as you may have seen is located directly in front of the hard drive cage.
The next photo is looking towards the back of the case and what you see is an opening for an 80mm fan that we have seen from a different angle and the opening for the power supply. One note here you power supply needs to be a certain length before it will fit in to case. Here is what you need. AStandard ATX PSU but recommending the depth be no longer than 140mm and preferably Non-Modular connect type PSU. What happens other wise is the power supply will not fit because of the hard drive cage.
Located on the left-side of the top portion of the case you will find a small metal channel that folds out from the side of the case. At first it was a bit confusing as to what its purpose was. After reading the direction you find out that it is intended to be used as a crutch for the top portion of the case when it is opened for motherboard installation of any other work that needs to be done on the lower portion of the case.
Here you can see the crutch swung out and holding the top portion in a position that allows you to work on the lower portion of the case.