Case Specifecation Case Form Factor Mid-Tower Material (Front/Side)Tempered Glass+Aluminum (Body)Steel Motherboard supporting E-ATX / ATX / Micro-ATX Expansion Slots 8 Internal 2.5" Bays 6 Internal 3.5" Bays 3 140mm Fans Included None 120mm Fan Mount (Top) 120mm x3 / 140mm x2(Option) (Side) 120mm x3(Option) (Bottom) 120mm x3 (Option) I/O Interface USB3.0 x2 HD Audio USB3.1 Type-C x1 HD Audio Case specification link https://lian-li.com/product/pc-o11-dynamic-razer-edition/