Product Description
Big Performance in a Compact Footprint.
The ASUS A21 PLUS is engineered for builders who demand top-tier thermal performance and a clean, minimalist look without the bulk of a standard ATX tower. Whether you are building a specialized BTF rig with hidden cables or a standard high-airflow gaming system, the A21 PLUS provides the versatility and clearance needed to house enthusiast-grade hardware.
Key Performance Features:
BTF Ecosystem Ready: The A21 PLUS is fully compatible with ASUS BTF motherboards, allowing you to move all power, data, and fan connectors to the back of the motherboard tray for a truly seamless, clutter-free view of your internal components.
Exceptional Cooling Potential: Out of the box, it includes four pre-installed ARGB fans for immediate high-airflow performance. The front mesh panel is precisely engineered with 40% porosity, striking the perfect balance between massive airflow, effective dust filtering, and vibrant RGB visibility.
Component-Friendly Design: Despite its compact dimensions, the case supports full-sized hardware, including 360mm radiators at both the front and top, graphics cards up to 380mm long, and massive 33mm of cable management space behind the motherboard tray to keep your wiring perfectly organized.
Modern Aesthetic: With clean lines, a mesh front panel, and two color options, the A21 PLUS fits perfectly into any professional or gaming environment.
Technical Specifications
| Feature | Specification |
| Case Size | Micro-ATX Mid-Tower |
| BTF Compatible | Yes (Supports hidden-connector motherboards) |
| Max GPU Length | 380 mm |
| Max CPU Cooler Height | 165 mm |
| Radiator Support | Up to 360 mm (Front and Top) |
| Pre-installed Fans | 4x 120mm ARGB (3 Front, 1 Rear) |
| I/O Ports | 2x USB 3.2 Gen 1, Headphone/Mic |
| Cable Management | 33 mm depth behind motherboard tray |
| Dimensions | 220 x 430 x 465 mm |
| Weight | 8.1 kg |
