1、Good Heat Dissipation: The open chassis design is more conducive to air circulation, is conducive to the heat dissipation of various hardware, and fully releases the internal space of the chassis. 2、Right Space: The ATX computer open case bracket gives you a huge interior installation space, and the split hardware construction makes every millimeter make the most of it. 3、Strong Compatibility: Support ITX motherboard (305 x 244mm), power supply supports ATX ordinary large power supply, support expansion of a hard disk storage (5 or 5 inches can be installed), support 4 PCI expansion slots. 4、Easy to Assemble: The computer open case bracket is a bare block frame, light and easy to disassemble, stackable, easy to assemble, simple in structure, you can fully experience the fun of DIY. 5、Open Design: Aluminum DIY bare frame breaks the shackles of traditional chassis structure, further expands the internal space of the chassis, and has a higher degree of free in the open structure. 6 x Bracket4 x Foot Pad7 x Right Angle Connecting Plate7 x Support Rod1 x Power Cable7 x Screw7 x Gasket7 x Acrylic Connection Board4 x Black Protective Sheet1 x Accessory Box1 x Piece of Paper2 x Gloves1 x User Manual1 x 01 Accessories Package1 x 02/03 Accessories Package1 x 04 Accessories Package1 x 05 Accessories Package1 x 06 Accessories Package1 x 07 Accessories Package1 x 08 Accessories Package1 x 09 Accessories Package Item Type: ATX Computer Open Case BracketMaterial: Aluminum AlloyApplicable Motherboard: ATX Motherboard (Approx.305 x 244mm / 12 x 9.6in)Applicable Power Supply: ATX Ordinary Large Power SupplySupport Expansion Hard Drive Bay: 1 ( 3.5 or 2.5 Inches Can Be Installed)Support PCI Expansion Slot: 4Switch Interface: Start, Restart Switch and Indicator LightBottom Frame Size After Assembly: Approx. 422.5 x 248mm / 16.6 x 9.8in