Specifications 3.5" HDD / SSD trays 8 5.25" bays 4 Expansion slots 9 Front ports 2x USB 3.0, 2x USB 2.0, Audio in/out, Power button with LED (blue), Reset button, Fan controller (behind door) Total fan mounts 7 Front fan 2x 120/140 mm (included 1x hydraulic bearing 140 mm Silent Series R2 fan 1000 RPM) Top fan 2x 120/140 mm Rear fan 1x 120/140 mm (included 1x hydraulic bearing 140 mm Silent Series R2 fan 1000 RPM) Bottom fan 1x 120/140 mm (included 1x hydraulic bearing 140 mm Silent Series R2 fan 1000 RPM) Side fan 1x 120/140 mm Dust filters Front fans, Bottom Cable routing grommets Yes Left side panel Industrial sound-dampened steel Right side panel Industrial sound-dampened steel Compatibility Power supply type ATX Motherboard compatibility ATX, Micro ATX, mini-ITX, E-ATX and XL-ATX Front radiator 240 mm when HDD cages are removed or repositioned Top radiator 240 mm or 280 mm when using slim radiators