Features - Patented Aluminum Front Panel with Locks,Taiwan: 200281 / 190240 , China: 2L01259648.5 - Front Access USB2.0 x2 - 60mm x1 Cooling Fan - Removable Air Filter - Power and HDD LED - Power and Alarm Reset Switch - Optional Aluminum Chassis Specification Model Number : D-300SE RoHS Compliance Version : Yes Standard Drive Bays : - 3.5" Drives: 2 - 3.5" Drive (internal): 1 - 5.25" Drives: 4 Indicators : Power, HDD, Temperature, Fan (Fan/Temp require sensor board TC-ISF08 ) Switches : Power, Reset Supported PSU Type : 1U, 2U Expansion Slots : 7 Security : Front Bezel Key Lock Material of Front Bezel : Aluminum alloy Material of Handle : SECC Zinc-Coated Steel Material of Main Chassis : 1.2mm SECC Zinc-Coated Steel ( Japan Made ) Color of Front Bezel : Blue Color of Main Chassis : Black Front Connector : 2x USB 2.0 Air Filter : Removable & Washable Motherboard Size : 12 x 9.6 (ATX, microATX) Cooling Fan : 1x60mm Optional Fan : 60mm x1, 80mm x3 (DD-FANGUARD-8 required) Ordering Information (Part Number) - Blue Bezel:D-300SE - Black Bezel:D-300SE-BK - Red Bezel:D-300SE-RD - Silver Bezel:D-300SE-SL - with 400W Redundant PSU: D300SE-24R-40R2U - with 460W Redundant PSU: D300SE-24R-46R2U Dimensions (WxHxD) : 19.00" x 5.25" x 20.80" (482.6 mm x 133.3 mm x 528.3 mm)