MATREXX 55 V4 The MATREXX 55 V4 is a modern version of the classic MATREXX 55 cases that have been a favorite of system integrators and end users alike. Technical Spec Product Dimensions 421×215×483mm(L×W×H) Net Weight 6.9Kg Materials ABS+SPCC+Tempered Glass Motherboard Support Mini-ITX / Micro-ATX / ATX Front I/O Ports USB3.0×2、Audio×1 3.5' Drive Bays 2 2.5' Drive Bays 2+1 Expansion Slots 7Slots Pre-Installed Fans Front: 3×140mm ARGB PWM Rear: 1×120mm ARGB PWM Fan Support Front: 3x120mm/3×140mm Top: 2×120mm/2x140mm Rear: 1×120mm PSU Shrouded: 2×120mm Radiator Support Front: 120/140/240/280/360mm Top: 120/140/240/280mm Rear: 120mm CPU Cooler Height Limit 165mm GPU Length Limit 370mm Power Supply Type ATX PS2(maximum length: 170mm)