ASUS A21 PLUS ARGB Micro-ATX Case – White | 90DC00H3-B19010

Product Overview 

The ASUS A21 PLUS White is a compact yet powerful Micro-ATX PC case designed for builders who value clean aesthetics, modern motherboard compatibility, and strong cooling performance. With support for hidden-connector (BTF-style) motherboards, large radiators, and long graphics cards, the A21 PLUS delivers impressive flexibility in a space-efficient chassis.

Hidden-Connector Ready for Clean Builds 

The A21 PLUS is fully compatible with motherboards that use rear-mounted (hidden) connectors, allowing cables to be routed behind the motherboard tray. This design dramatically reduces visible clutter, resulting in a clean, professional-looking interior that highlights your components and ARGB lighting.

Broad Hardware Compatibility 

Despite its Micro-ATX footprint, the A21 PLUS supports high-performance components with ease. It accommodates graphics cards up to 380mm, CPU air coolers up to 165mm, and liquid-cooling radiators up to 360mm, making it suitable for modern gaming and creator systems.

Capable Cooling with High-Airflow Mesh 

Four pre-installed ARGB fans deliver strong, balanced airflow straight out of the box. The front mesh panel features 40% porosity, carefully engineered to maximize airflow while maintaining dust filtration and clear RGB visibility for the front fans.

Ample Cable Management Space 

A 33mm-wide compartment behind the motherboard tray provides generous room for cable routing. This extra depth makes it easy to hide wiring, improve airflow, and achieve a tidy, showroom-quality build.

Modern Front Connectivity 

The front I/O panel includes two USB 3.2 Gen 1 ports, along with dedicated headphone and microphone jacks, ensuring convenient access for everyday peripherals and gaming accessories.

Buy Now – Compact, Clean, and Ready for the Future 

Buy the ASUS A21 PLUS ARGB Micro-ATX Case – White for a refined blend of compact size, hidden-connector readiness, strong airflow, and modern connectivity—perfect for clean, high-performance PC builds.