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At the bottom we find rubber grips which keep the case from sliding around and of course help to prevent resonating noises and thus dampen noise levels. The PSU fan area has a dust filter, and to your right, two vents under the drive cages.
When we open up the side panel we spot two 120mm fans and a large round meshed ventilation hole towards the mid back that covers the processor position.
So let's talk HDDs and SSDs. The chassis can carry 7 internal 3.5"/2.5" storage devices.
All 3.5" devices are installed tool free, you simply use a plastic tray and rubber grips for the HDDs. 2.5" devices you need to screw securely into the drive tray.
Once seated, you simply slide it. Obviously you'll need to route cabling like SATA and power connectors to and through the backside.