Features The air vent in the front provides superior ventilation The front I/O panel provides easy access for users Multi-color front panel for individual preferences Side panel security lock for higher safety to your components Supports an optional 80/90/120mm fan on the side panel to cool the graphics cards The 120mm fan in the rear helps to keep the constant cooling Technical Details Brand : Cooler Master Model : RC-310C-KKN3-U3 AVAILABLE COLOR(S) : Black DIMENSIONS (L X W X H) : 191 x 437 x 468 mm / 7.5 x 17.2 x 18.4 inch NET WEIGHT : 5.8kg / 12.8 lbs GROSS WEIGHT : 6.9 kg / 15.2 lbs MATERIALS : Steel body, ABS plastic front bezel MOTHERBOARD SUPPORT : Micro ATX, ATX 5.25" DRIVE BAYS : 4 (exposed) 3.5" DRIVE BAYS 6 (hidden), 1 (exposed) I/O PANEL : 2x USB 2.0, 1x Mic, 1x Audio (supports HD audio), IEEE 1394a (optional) COOLING SYSTEM - REAR : 120 x 25mm fan x 1 / 1200 RPM / 17 dBA (installed), or 80/90mm fan x 1 (optional) COOLING SYSTEM - FRONT : 120 x 25 mm fan x 1 (optional) COOLING SYSTEM - SIDE : 1x 80/90/120mm fan (optional) EXPANSION SLOTS : 7 POWER SUPPLY SUPPORT : Standard ATX PS2 (optional) MAXIMUM COMPATIBILITY - VGA CARD LENGTH : 275mm / 10.8 inch MAXIMUM COMPATIBILITY - CPU COOLER HEIGHT : 155mm / 6.1 inch SERIES : Elite Series SIZE : Mid Tower