The CORSAIR FRAME 4000D RS ARGB is a fully-modular and spacious mid-tower PC case featuring InfiniRail Fan Mounting System and compatible with reverse connector motherboards. Includes Fully-modular design for next-level customization InfiniRail Fan Mounting System for easier ...The CORSAIR FRAME 4000D RS ARGB is a fully-modular and spacious mid-tower PC case featuring InfiniRail Fan Mounting System and compatible with reverse connector motherboards. Includes Fully-modular design for next-level customization InfiniRail Fan Mounting System for easier building Includes three RS120 ARGB performance fans Dual 360mm radiator support GPU anti-sag stabilization arm Compatible with reverse connector motherboards including ASUS BTF, MSI PROJECT ZERO, and GIGABYTE PROJECT STEALTH