1)The case panel with metal mesh for best ventilation
2)simple and noble appearance
3)USB/AV in the middle of the panel

Case Type: Middle Tower 

Drive Bays: 4 x 5.25"ODD  1 x 3.25" HDD  1x 3.5"FDD 

 Fan Space: Rear x 1, 8cm

Materials and colors: 0.5mm SGCC; Black Dimensions (mm): 370*173*405(L*W*H)(Without Front Panel) Motherboard: ATX, micro ATX ;Expansion slots: 7 IO ports: USB1.0 x 2, MIC and AUDIO Optional: Various bezel could be selected Measurement: 600PCS/20GT                        1260pcs/40GP                         1470PCS/40HQ