1,MULTIFUNCTION: DIY open chassis frame supports ATX motherboards, 360 water cooling, 2 hard disk drive bays, and up to 256MM graphics cards. 2,POWERFUL COOLING: Computer open case bracket supports 3 x 12CM fans or 360 water coolers to ensure low temperature operation inside the chassis. 3,FLEXIBLE HARD DISK: Computer case frame chassis rack supports 2 hard disk bays HDDx2 or SSDx2 or SSD and HDD to meet different storage needs. 4,LARGE SPACE EXPANSION: DIY open chassis frame supports full height graphics card up to 256MM, suitable for various ATX, M ATX, ITX motherboards. 5,SIMPLE OPERATION: Press bounce to turn on the computer, long press to turn off the computer, easy and fast operation. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.