1、Applicable Motherboard Specifications: Computer open case supports all standard ATX, MATX,for FLEX motherboards with adapter cables, maximum motherboard size 305 x 245mm. 2、Powerful Expandability: This computer open chassis supports unlimited length graphics card installation, short graphics card mounting bracket for all lengths of GPU graphics cards. 3、Ensure Efficient Cooling: The front of the computer open chassis rack features four lockable 12cm/4.7in fan positions to ensure the cooling effect of the graphics card. 4、Multi Functional: Maximum 8 graphics cards can be installed, supports ATX single power supply, 4 12x12x2.5cm / 4.7x4.7x1in fan spaces can be installed, and 1 SSD and 1 HDD hard disk are supported at the same time. 5、Stable And Reliable: DIY computer case is made of sturdy steel plate material, high hardness, not easy to deform, long service life, supports for Great Wall 1250 and other ATX power supply. Item Type: Computer Open Case Material: Steel Plate Motherboard: Supports All Standard ATX, MATX, for FLEX Motherboards (Conversion Cable Is Required) Maximum Motherboard Size: Approx. 305 x 245mm / 12 x 9.6in Graphics Card: Can Accommodate Up to 8 Graphics Cards Power Supply: ATX Power Supply Storage: 1 SSD with 1 HDD 1 x Bottom Plate 1 x PCI Bracket 1 x Rear Bracket 1 x Left Bracket 1 x Right Bracket 1 x Graphics Card Bracket 2 x Rubber Strip 1 x Power Enhancer 1 x Switch Cable 1 x User Manual 1 x Screw Package