Features: 1. It is a bare frame of building blocks, which is light and compact, easy to disassemble and can be superimposed. 2. Simple aluminum profile construction, for you to fully experience DIY fun. 3. 20x20 aluminum profile, the vertical structure is very firm. 4. Support ATX ordinary power supply. 5. Open chassis design, good heat dissipation. 6. Good compatibility, support ATX, M-ATX, for ITX motherboard. 7. You can even carry it away, which need to be equippped with a handle. 8. Support independent graphics card, which requires optional graphics card accessories. Specifications: Chassis Style: Bare Metal Frame Applicable Motherboard: for ITX Motherboard (17 x 17cm) M-ATX, ATX Motherboard Power Supply Design: ATX Ordinary Power Supply Thermal Performance: Full Bare Heat Dissipation Chassis Assembly: DIY Self-Assembly Support for Extended Hard Drive Positions: 1x 3.5inch, 1x 2.5inch Support PCI Expansion Slots: 7 Switch Interface: Start / Restart Switch and Indicator Chassis Material: 20x20 Aluminum Profile / Acrylic Accessories Size: (LxWxH)Approx. 315x246x353mm/12.40x9.69x13.9inch (After Assembly) Color: Black, Red Optional Package List: 9 x Aluminum Alloy Pipe 4 x Bracket Gasket and Screw Bag 1 x Installation Assistance Accessories Screw Type Box (Plastic Box) 1 x Mounting Assistance Accessory Bezel Type Box (Paper Box) 1 x Installation Instructions Manual 1 x Handle (With a Set of Screws) Note: 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. .