Case Specifecation Case Form Factor Mini-Tower Material Steel Mesh Plastic Motherboard supporting Mini ITX Micro ATX Expansion Slots 4 Internal 2.5" Bays 2 Internal 3.5" Bays 2 120mm Fan Mount Pre-installed Fans - Top N/A Pre-installed Fans - Front 2x 120mm Sickle flow PWM ARGB Fans Pre-installed Fans - Rear N/A Pre-installed Fans - Bottom N/A Fan Support - Top 2x 120mm / 2x 140mm Fan Support - Front 3 x 120mm* / 2 x 140mm *can only mount behind the front plate Fan Support - Rear 1x 120mm Radiator Support - Top 120mm 140mm 240mm 280mm Radiator Support - Front 120mm 140mm 240mm 280mm Radiator Support - Rear 120mm I/O Interface 2x USB 3.2 Gen 1 (formerly USB 3.0) 1x 3.5mm Audio Jack 1x 3.5mm Mic Jack 1x ARGB/PWM Hub Case specification link https://www.coolermaster.com/catalog/cases/mini-tower/td300-mesh/#specifications