With year of accumulated experience the Jonsbo team have craft an outstanding PC case with the RM3. It is made from an aluminum-magnesium alloy, which imparts a stylish minimalist design.By using outer aluminum and inner steel with innovative structural joining technology, it perfectly fuses the strong structure and good appearance of the product.Fully tempered glass used in automobile industry is used for making the transparent side panel of RM3, it not only provides wide-angle display for illuminated hardware but also brings an unexpected solution for isolating noise and resonance.Model: RM3 Color: Black Dimension: 215mm (W) 336mm (D) 385mm (H) (8mm feet not included) Material: Front Plate: 4.0mm Aluminum; Internal Structure: 1.0mm SGCC Steel; Back / Top / Bottom Plate: 1.5 + 2.0mm Aluminum; Side Plate: 5.0mm Tempered Glass Side Plate Motherboard: ITX / MATX Drive Bay: SSD 3 + HDD 2 Or SSD 5 Cooling System: Top: 1 140mm fan (Built in); Back: 1 120mm fan (Built in); Bottom: 1 120mm fan (Built in) Water cooling support: The 12CM fan position of the rear window can be installed with 120 split and integrated water cooling rows. Note that the cold row cannot be installed at the top 140 position. CPU Cooler: Not higher than 170mm Display Card: Not longer than 310mm (Not longer than 285mm if HDD is installed) Front I / O Port: USB 3.0 2 / AUDIO 1 / MIC 1 Expansion Slot: 4 Power Supply: Standard ATX PS2 (Not longer than 165mm) Weight: Net 7.3kg / Gross 9.5kg