These PCI vents with ventilation holes increase the passive thermal properties and improve the rear ventilation. The standard size of the panels allows for use in any case.Now one can also ask himself: Why should ICH then provide the extension slots with apertures at all - the best ventilation is given if ICH completely omit them!? Absolutely right! But factory-fitted slot plates have another purpose! They also guarantee the optimum shielding against EMI emissions, which, should they penetrate outside, could influence other devices in the vicinity and interfere with their functioning. These shutters add 70 percent of the ventilation surface and are resistant to Emis.WAS do you want more? The five black nickel-plated bracket plates that contain the packaging embellish each "casing backside" with their noble look and represent the ultimate in modding projects.This text is machine translated.