Quick overview from the supplier:
Case Acer Veriton X2631G
Dimensions 445x 210 x 470 mm(DxWxH)
Form Factor Mid Tower
Materials 0.6 mm SGCC + Plastic
Mainboard Support ATX,Micro-ATX,Mini-ITX
Front Access & Controls USB3.0 x 2,MIC/AUDIO(HD),Power, Reset
Side Panel: Transparent acrylic window
Expansion & Drive Bays
Expansion Slots: 6
5.25" 0
3.5"/2.5" (convertible) 2
2.5" 4
Cooling:
Front: 3x120mm or 2x140mm
Rear 1x120mm
Included Fan(s) 1 x 120mm rear fan
Radiator Support
Front ≤360mm (up to 55mm thickness with fan)
Top N/A
Rear ≤ 120mm
Clearance
MB Tray Clearance ≤20mm
Max GPU Length ≤ 390mm
Max CPU Height ≤ 165mm
Max PSU Length ≤200mm
Others:
Dust Filters Front/Top/Bottom