This case has four external 5 ¼” bays, two external 3 ½” bays and five internal 3 ½” bays. The external 3 ½” bays cannot be used to install hard disk drives (we tried). As mentioned, the 5 ¼” bay covers are meshed and feature dust filters, shown in Figure 16.

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Figure 16: Dust filters on 5 ¼” bay covers.

The screwless mechanism used by this case is outstanding, based on rails that must be attached to each drive (no screws are necessary). These rails are available in a rail holder that comes attached to the lowest 5 ¼” bay, see Figure 17. This is a really neat feature.

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Figure 17: Rail holder.

The hard disk drives are installed inside a cage. This cage, however, has only four bays. The fifth hard disk drive bay is available in a perpendicular position below this cage and do not support the screwless mechanisms, so the fifth hard disk drive must be installed in the case using conventional screws.

The hard disk drive cage can be slightly tilted  in order to facilitate the hard disk drive installation process, see Figures 18 and 19.

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Figure 18: Hard disk drive cage.

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Figure 19: Hard disk drive cage tilted.

With the cage tilted you can remove the front 120 mm fan, which is fastened to the case using a screwless mechanism. This fan has a dust filter and uses three wires, so you can install it directly on the motherboard and monitor its speed. Like all other fans, In Win does not say anything about speed, noise or airflow level.

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Figure 20: Front 120 mm fan.