As mentioned this case has four external 5 ¼” bays and five internal 3 ½” bays. One of these 3 ½” bays can be used for installing a floppy disk drive, so the maximum number of hard disk drives you can have is four or five, if you don’t have a floppy disk drive. This case has a space for installing a 120 mm fan between the front panel and the hard disk drive bays.

As you can see in Figure 11 this case uses screwless mechanisms for fastening disk drives to the case.

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Figure 11: Bays.