ASUS A21 PLUS Case
The ASUS A21 PLUS microATX case redefines compact performance with its elegant design and functional engineering. It supports hidden-connector motherboards, ensuring clean cable management and a polished internal layout. Despite its small footprint, it offers broad compatibility for 360 mm radiators, 380 mm graphics cards, and 165 mm CPU air coolers, giving builders the flexibility to design high-performance systems without compromise.
Equipped with four pre-installed ARGB fans, the A21 PLUS provides efficient airflow and vibrant lighting that syncs seamlessly with your system’s RGB ecosystem. Its 40% porous front mesh panel balances airflow, dust filtration, and RGB visibility for an optimal cooling setup. The 33 mm cable management compartment ensures that wires remain tucked neatly behind the motherboard tray, contributing to a professional, streamlined look.
Available in black or white color variants, the A21 PLUS features color-coordinated internal I/O cables that perfectly complement your build theme. Engineered for functionality, airflow, and aesthetics, the A21 PLUS delivers an ideal platform for both first-time builders and enthusiasts aiming for a clean, high-performance PC setup.
Features
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Hidden Connectors: Compatible with hidden-connector motherboards for a clutter-free interior.
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Broad Compatibility: Supports up to 360 mm radiators, 380 mm GPUs, and 165 mm CPU air coolers.
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Capable Cooling: Comes with four pre-installed ARGB fans and a 40% porous mesh front for superior airflow.
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Ample Cable Management: 33 mm wide compartment behind the motherboard for clean cable routing.
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Color-Coordinated Builds: Available in black and white, with matching internal cables for aesthetic consistency.
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GeForce RTX 50 Ready: Future-proof design for next-gen GPUs.
Specifications
| Categories | Details |
|---|---|
| Model | ASUS A21 PLUS Case |
| Motherboard Support | Micro-ATX, Mini-ITX, BTF motherboard compatible |
| Drive Bays | 1 x 2.5″ Bay, 2 x 2.5″/3.5″ Combo Bay |
| Expansion Slots | 5 |
| Front I/O Ports | 1 x Headphone, 1 x Microphone, 2 x USB 3.2 Gen1 |
| Radiator Support (Front) | 120 mm / 140 mm / 240 mm / 280 mm / 360 mm |
| Radiator Support (Top) | 120 mm / 140 mm / 240 mm / 280 mm / 360 mm |
| Radiator Support (Rear) | 120 mm |
| Cooling Support (Front) | 3 x 120 mm / 2 x 140 mm |
| Cooling Support (Top) | 3 x 120 mm / 2 x 140 mm |
| Cooling Support (Rear) | 1 x 120 mm |
| Pre-Installed Fans (Front) | 3 x 120 mm ARGB |
| Pre-Installed Fans (Rear) | 1 x 120 mm ARGB |
| Maximum CPU Cooler Height | 165 mm |
| Maximum GPU Length | 380 mm |
| Maximum PSU Length | 210 mm |
| Cable Management Space | 33 mm |
| Dimensions | 220 x 430 x 465 mm |
| Weight | 8.1 Kg |
| BTF Motherboard Compatible | Yes |
| Color Options | Black / White |




















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