Dimension(WxDxH):480mmx625mmx43.7mmSheet Metal:1.0mm SECCMother Board Support:12"x13" and belowPower Supply Support:1U singleIndicators:Power\ HDD\ LANFront USB:USB 2.0x1System Cooling Fans:4 B4048 fans(STD)or 4 B4028 fans(STD)Expansion Slots:1 slotDrive Bays:3 3.5" HDD baySafety:Design of anti-EMI