ASUS A21 MATX Mid Tower Cabinet (White)

The ASUS A21 is a micro-ATX mid tower cabinet designed for mainstream DIY builders who want a clean, compact, and thermally capable chassis without sacrificing compatibility. Available in a crisp White finish, the A21 pairs a minimalist aesthetic with practical engineering choices that make building and cable management noticeably more straightforward. One of the A21's standout attributes is its broad hardware compatibility despite its compact mATX footprint. The case accommodates graphics cards up to 380 mm in length, making it compatible with a wide range of current-generation discrete GPUs. CPU air coolers up to 165 mm tall can fit comfortably, and the case supports radiators up to 360 mm — covering 120 mm, 140 mm, 240 mm, 280 mm, and 360 mm configurations — so builders can opt for an AIO liquid cooler of virtually any mainstream size. Cooling performance is addressed through a front panel mesh that is 40% porous, striking a balance between maximising intake airflow, providing dust filtration, and allowing RGB lighting to remain visible. The case supports up to seven fans in total, with the front panel accepting up to three 120 mm units for solid positive-pressure airflow. Behind the motherboard tray, a dedicated cable management compartment measuring 33 mm in depth keeps wiring concealed and the interior tidy. Storage options include one 3.5-inch HDD bay and one 2.5-inch SSD bay. The front I/O panel provides a headphone jack, a microphone jack, and a USB 3.2 Gen1 port for fast peripheral connectivity. The chassis supports Micro-ATX and Mini-ITX motherboards, offering flexibility for different build configurations. Five expansion slots accommodate multi-slot graphics cards and additional PCIe accessories. The PSU bay accepts power supplies up to 210 mm in length, covering the vast majority of standard ATX units. Verified Specifications: - Form Factor: Micro-ATX Mid Tower - Supported Motherboards: M-ATX, M-ITX - Product Code: A21-WHITE - Max GPU Length: 380 mm - Max CPU Cooler Height: 165 mm - Max PSU Length: 210 mm - Radiator Support: 360 mm, 280 mm, 240 mm, 140 mm, 120 mm - Max Fan Support: 7 - Expansion Slots: 5 - Storage: 1× 3.5-inch HDD, 1× 2.5-inch SSD - Front I/O: Headphone, Microphone, USB 3.2 Gen1 - Dust Filter: Front - Cable Management Compartment: 33 mm wide - Front Panel Mesh Porosity: 40% - Warranty: 1 Year