Welcome to the store! 1. Good Heat Dissipation: The open chassis design promotes better airflow, aiding in heat dissipation for various hardware components and maximizing the internal space of the chassis. 2. Ample Space: The ITX computer open case provides vast internal installation space, and the split hardware design ensures every millimeter is utilized effectively. 3. Strong Compatibility: Supports ITX motherboards (17x17cm), ATX standard large power supplies, expansion for one hard drive (3.5 or 2.5 inches), and two PCI expansion slots. 4. Easy to Assemble: The computer open case is a bare block frame, lightweight, and easy to disassemble. It's stackable and simple in structure, allowing you to fully experience the fun of DIY. 5. Open Design: The aluminum DIY bare frame breaks free from traditional chassis structures, further expanding the internal space and offering greater freedom in its open design. Item Type: ITX Computer Open Case Bracket Material: Aluminum Alloy Applicable Motherboard: ITX Motherboard (Approx. 17 x 17 cm / 6.7 x 6.7 inches) Applicable Power Supply: ATX Standard Large Power Supply Hard Drive Bay Expansion Support: 1 (3.5 or 2.5 inches can be installed) PCI Expansion Slot Support: 2 Switch Interface: Power, Reset Switch, and Indicator Light Bottom Frame Size After Assembly: L315 x W210mm 5 x Aluminum Alloy Bracket 1 x User Manual 2 x Paper 4 x Foot Pad 1 x Power Cord 2 x Support Rod 7 x Right Angle Connecting Plate 2 x Screw 2 x Gasket 5 x Acrylic Connecting Board 4 x Black Protective Sheet 2 x Gloves 1 x 01 Accessory Package 1 x 02/03 Accessory Package 1 x 04 Accessory Package 1 x 05 Accessory Package 1 x 06 Accessory Package 1 x 07 Accessory Package 1 x 08 Accessory Package 1 x 09 Accessory Package