Model:UMX1 PLUS Color:Silver Dimension:160MM (W) * 300MM (D) * 345MM (H) Material:External structure : 2.0 mm Aluminum Alloy; Internal Structure: 1.0+0.8 mm SGCC Steel Motherboard:ITX Drive Bay:1x3.5", 1x2.5" Or 2x2.5" Cooling system:Top :1×120 mm fan; Back:1×80 mm fan (optional) CPU Cooler:Not higher than 130 mm Display Card:Not longer than 270 mm Front I/O Port:USB 3.0×2,USB 2.0×2,Audio×1,MIC ×1 Power Supply:PSII (Not longer than 160mm) Expansion Slot:2