Category Specification Brand Deepcool Model Matrexx 55 V3 ADD‑RGB WH 3F Case Type Mid‑Tower ATX Color White Material Steel + Plastic + Tempered Glass Motherboard Support ATX, Micro‑ATX, Mini‑ITX Expansion Slots 7 Drive Bays 2 × 3.5″ HDD, 2 × 2.5″ SSD (typical) Front I/O Ports USB‑C, USB 3.0, Audio In/Out, Power/Reset Cooling Support — Front Up to 3 × 120 mm or 2 × 140 mm fans Cooling Support — Top Up to 2 × 120 mm fans Cooling Support — Rear 1 × 120 mm fan Pre‑Installed Fans 3 × ADD‑RGB fans (front) Radiator Support — Front Up to 360 mm Radiator Support — Top Up to 240 mm Radiator Support — Rear 120 mm Tempered Glass Side panel tempered glass PSU Mount Bottom mount with PSU shroud Maximum GPU Length ~355 mm Maximum CPU Cooler Height ~165 mm Maximum PSU Length ~180 mm Dust Filters Front / Top / Bottom Drive Cage Removable HDD cage Cable Management Routing channels with tie‑points Lighting ADD‑RGB lighting with controller support Weight Standard mid‑tower