Two Air Penetrator AP181 fans included for great performance and quietness Removable motherboard tray and top panel Quick access filters with HI Flow Technology to prevent dust buildup Unrestricted airflow design minimizes noise and maximizes fan performance Convenient routing pathways for excellent cable management Adjustable holder for large CPU coolers and graphic cards Independent airflow channel for power supply with dedicated PSU filter Accommodates up to seven 3.5-Inch hard drives and four 2.5-Inch SSD’s