The right panel is attached to the chassis using thumbscrews, however the left panel uses regular screws. This is not a problem as since the motherboard tray is permanently attached to the chassis, this case doesn’t have holes for routing cables behind the motherboard tray and it has screwless mechanisms for holding disk drives, you will need to remove the left panel almost never.

Both panels come with a somewhat thick anti-static foam to reduce the noise produced by the computer. Foam is available also on the inner top and bottom panels, for the same purpose.

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Figure 5: Side panels come with noise-absorbing foams attached.

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Figure 6: Inside Sileo 500.

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Figure 7: Foam on the inner top panel (the power supply was removed).

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Figure 8: Foam on the inner bottom panel.

Daughter boards are attached to the case using individual screwless mechanisms, which are made of plastic.

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Figure 9: Screwless mechanism.