ASUS A21 PLUS Micro-ATX ARGB Gaming Case – Black
The ASUS A21 PLUS Black is a high-airflow Micro-ATX gaming case featuring four pre-installed 120mm ARGB fans, hidden-connector motherboard support, and extensive cooling compatibility. It supports 360mm radiators, graphics cards up to 380mm, CPU coolers up to 165mm, and PSUs up to 210mm, making it suitable for powerful and clean-looking compact gaming builds.
Product Overview
The ASUS A21 PLUS is designed for compact gaming PCs while maintaining excellent component and cooling compatibility. Its high-airflow mesh front panel features 40% porosity, helping balance airflow, dust filtering, and visibility of the front ARGB fans.
The case comes with four 120mm ARGB fans pre-installed, including three front fans and one rear fan. It supports up to three 120mm or two 140mm fans at both the front and top, with an additional 120mm rear fan position.
Cooling support includes radiators up to 360mm at the front and top, plus a 120mm rear radiator. Despite its Micro-ATX size, the case accommodates graphics cards up to 380mm long, CPU air coolers up to 165mm high, and power supplies up to 210mm long.
The A21 PLUS supports Micro-ATX and Mini-ITX motherboards, including compatible BTF hidden-connector motherboards for cleaner cable routing. A spacious 33mm cable-management compartment behind the motherboard further helps create a clean and organized build.
Please check the official manufacturer website for the latest and most accurate compatibility, clearance, radiator, fan, and I/O specifications before purchase or finalizing a build.
Key Features
- 🖤 Black Edition
- 🖥️ Micro-ATX Gaming Case
- 🌈 4 × Pre-Installed 120mm ARGB Fans
- 🌬️ High-Airflow 40% Porous Mesh Front Panel
- 🔌 BTF Hidden-Connector Motherboard Support
- 💧 Up to 360mm Front Radiator
- 💧 Up to 360mm Top Radiator
- 🎮 Up to 380mm GPU Length
- ❄️ Up to 165mm CPU Cooler Height
- ⚡ Up to 210mm PSU Length
- 🌀 Up to 7 × 120mm Fans
- 🔲 Micro-ATX / Mini-ITX Support
- 🧰 33mm Cable Management Space
- 💾 Multiple SSD/HDD Mounting Options
Technical Specifications
| Category | Cases |
| Manufacturer | ASUS |
| Model | A21 RGB PLUS Black mATX |
| Case Type | Micro-ATX |
| Motherboard Support | Micro-ATX / Mini-ITX |
| GPU Clearance | 380mm |
| Top Radiator | Up to 360mm |
| Included Fans | 3 × 120mm Front ARGB + 1 × 120mm Rear ARGB |
| Front I/O | 2 × USB 3.2 Gen 1, Headphone, Microphone |
| PSU | Not Included / Please Check Official Specifications |
| Color | Black |
| Warranty | 1 Year Manufacturer Warranty |
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