C5 is a small form factor ATX case based on the idea of functional integrity. It is an ATX case iteratively derived from MATX C3 PLUS. The shell is made of l.5MM aluminum-magnesium alloy. In terms of structural strength, the main structural strength is enhanced by L-shaped crossed buckles design and multiple bending processes. In terms of product functionality, it is design with wire management at back, bottom independent PSU cabinet and front side cooling channel. In such a small space it supports 5 HDD with longer video card support, and many other iterative optimization makes C5 a perfect integral product. Even ordinary users can easily build a small-sized ATX system with clear wiring and unobstructed heat dissipation.Mode:C5Color:SilverDimension:218mm(W)360mm(D)439mm(H)Material:Front Plate:1.5mm Aluminum; Internal Structure:0.8mm SGCCMotherboard:ITX , Micro ATX , ATXDrive Bays:43.5\", 22.5\" or 33.5\", 42.5\"Cooling System:Front : 2*120mm or 2*140mm(Optional) ;Back: 1*120mm (Optional); Bottom:1*120mm (Optional)Radiator Support:Front : 240mm or 280mm RadiatorCPU Cooler:170mmDispaly Card:340mm(340mm can be installed if front HDD rack bracket has been removed, otherwise no longer than 280mm )I/O Ports:Audio1, MIC1, USB3.02Expansion Slot:7PSU:250mm(lf fan and HDD are installed on bottom,only 185mm can be installed)Weight:Net 5.3KG