JYE-3810 3U Rackmount chassis Specifications & Features : Dimensions ( WxDxH ) : 482.6 x 528.3 x 132.1 ( mm ),( 19.0" x 20.8" x 5.2" ) Drive Bays : 2 x 3.5" + 4 x 5.25" ( External ) , 1 x 3.5" ( Internal ) Mainboard Type : ATX ( 12" x 9.6" ) Cooling : 1 x 60mm Ball Bearing Fan ( Standard ) Cooling : 2 x 80mm Ball Bearing Fans ( Optional ) Switches : Power ON/OFF, System & Alarm Reset Indicators : LEDs for Power ON/OFF, HDD, Fan & Alarm Slot Opening : 7 Slots Air Filter : Removable & Washable Security : Both Front Doors Are Lockable Speaker : 0.4W Built-In Fan & Temp. Detecting Board For System Environment Monitoring ( Optional ) Material Of Front Bezel : Aluminum Alloy With Hard Anodized Treatment Material Of Handle : Aluminum Alloy Material Of Main Chassis : 1.2mm SECC Zinc-Coated Steel ( Japan Made ) Color Of Front Bezel : Silver or Black or Gold Color Of Main Chassis : Black ( Standard ) or Beige PS2 or USB x 2 Connector At Front Power Supply (PSU) : Special Size ATX PSU Only For 3U Chassis