Specifications:Chassis Style: Bare Metal FrameApplicable Motherboard: for ITX Motherboard (17 x 17cm) M-ATX, ATX MotherboardPower Supply Design: ATX Ordinary Power SupplyThermal Performance: Full Bare Heat DissipationChassis Assembly: DIY Self-AssemblySupport for Extended Hard Drive Positions: 1x 3.5inch, 1x 2.5inchSupport PCI Expansion Slots: 7Switch Interface: Start / Restart Switch and IndicatorChassis Material: 20x20 Aluminum Profile / Acrylic AccessoriesSize: (LxWxH)Approx. 315x246x353mm/12.40x9.69x13.9inch (After Assembly)Color: Black, Red OptionalPackage List:9 x Aluminum Alloy Pipe4 x Bracket Gasket and Screw Bag1 x Installation Assistance Accessories Screw Type Box (Plastic Box)1 x Mounting Assistance Accessory Bezel Type Box (Paper Box)1 x Installation Instructions ManualNote:1. The chassis needs to be installed by DIY yourself. Be patient and follow the instructions.2. Some panels are designed for disassembly at one time, so start after considering and preparing.3. The motherboard is of size 305x244m and less.4. Regular maintenance of the acrylic panel will maintain the brightness of the original tear film for a long time.