Welcome to our store! 1. Excellent Heat Dissipation: The open chassis design promotes better airflow, enhancing heat dissipation for various hardware components and maximizing internal space. 2. Ample Space: This ATX open-frame case provides generous internal installation space. The modular design ensures optimal use of every millimeter. 3. Strong Compatibility: Supports ITX motherboards (305 x 244 mm), standard ATX power supplies, one hard drive bay (supports 3.5" or 2.5" drives), and four PCI expansion slots. 4. Easy Assembly: The open-frame design is simple, lightweight, and easy to assemble and disassemble, perfect for DIY enthusiasts. 5. Open Design: This aluminum DIY open frame breaks free from traditional chassis structures, further expanding internal space and offering greater freedom. Specifications: Item Type: ATX Computer Open Case Bracket Material: Aluminum Alloy Applicable Motherboard: ATX Motherboard (Approx. 305 x 244 mm / 12 x 9.6 inches) Applicable Power Supply: ATX Standard Power Supply Hard Drive Bay Support: 1 (3.5" or 2.5" installable) PCI Expansion Slot Support: 4 Switch Interface: Power, reset switches, and indicator light Assembled Bottom Frame Size: Approx. 422.5 x 248 mm / 16.6 x 9.8 inches Package Includes: 6 x Fasteners 4 x Foot Pads 7 x Right Angle Connecting Plates 7 x Support Rods 1 x Power Cable 7 x Screws 7 x Gaskets 7 x Acrylic Connecting Cards 4 x Black Protective Sheets 1 x Accessory Box 1 x Paper 2 x Gloves 1 x User Manual 1 x Accessory Pack 01 1 x Accessory Pack 02/03 1 x Accessory Pack 04 1 x Accessory Pack 05 1 x Accessory Pack 06 1 x Accessory Pack 07 1 x Accessory Pack 08 1 x Accessory Pack 09 Customer satisfaction is our top priority. If you encounter any issues with your product upon receipt, such as damage or incorrect quantity, please contact us immediately. We strive to provide the best after-sales service.