Easy Build, Direct Performance: ASUS A31 provides mainstream users the great compatibility with 360mm AIO and RTX 5090/4090 in mainstream ATX build Real Panorama, Direct View: The A31 features dual-sided tempered glass panels and a frameless, pillar-free design, offering a completely unobstructed view of your system's internal components BTF Hidden Connector Design: For a pristine, clutter-free build, all modular cables are concealed behind the motherboard, seamlessly aligning with hidden connectors for a sleek, polished look Optimized for Liquid Cooling: Supports AIO coolers with up to 80mm clearance, ensuring superior thermal performance and enhanced system stability