How to Use: Install and use Specification: Item Type: MATX Computer Open Case Bracket Material: Aluminum Model: PC JMK6 MATX Applicable Motherboard: MATX Motherboard (Approx.244 x 244mm / 9.6 x 9.6in) Power Supply Design: ATX Ordinary Large Power Supply Heat Dissipation Performance: Full Naked Heat Dissipation Support Expansion Hard Drive Bay: 1 (3.5 or 2.5 Inches Can Be Installed) Support PCI Expansion Slot: 4 Switch Interface: Start, Restart Switch and Indicator Light Bottom Frame Size After Assembly: L360 x W248mm Package List: 6 x Bracket 1 x Positioning Paper 4 x Foot Pad 1 x Power Cable 7 x Right Angle Connecting Plate 4 x Support Rod 5 x Screw 5 x Gasket 7 x Acrylic Connection Board 4 x Black Bumper Cover 1 x Accessory Box 2 x Gloves 1 x 01 Accessories Package 1 x 02 03 Accessories Package 1 x 04 Accessories Package 1 x 05 Accessories Package 1 x 06 Accessories Package 1 x 07 Accessories Package 1 x 08 Accessories Package 1 x 09 Accessories Package 1 x User Manual Note: 1. The chassis needs to be DIY installed by yourself, and you must be patient to assemble it according to the steps in the user manual. 2. Some panels are designed to be disassembled at one time, you need to consider it before starting. 3. The main board is of MATX structure, and the size must be within 244 x 244mm. 4. Regular maintenance of the acrylic panel will keep the original brightness after tearing the film for a long time.