ASUS A21 PLUS White
ASUS A21 PLUS White
The ASUS A21 PLUS PC case is a compact micro-ATX case that combines support for modern components with thoughtful cable management and efficient cooling. The case is compatible with BTF motherboards, which allow connectors to be hidden on the underside of the board. Four pre-installed ARGB fans provide ample cooling, while the 40% porous front mesh strikes a balance between airflow, dust filtration, and RGB lighting visibility. It accommodates micro-ATX and mini-ITX motherboards, up to 360mm liquid cooling radiators, graphics cards up to 380mm in length, and CPU air coolers up to 165mm in height. For storage, there is one 2.5" bay and two combined 2.5"/3.5" bays suitable for both HDDs and SSDs. Cables can be tucked away in a 33mm wide compartment behind the motherboard, making assembly and maintenance easier. The case is available in two colour options with colour-matched internal I/O cables, and the top panel offers headphone, microphone, and two USB 3.2 Gen1 ports. With dimensions of 220 × 430 × 465 mm and a weight of 8.1kg, it's a great choice for modern, compact builds.
220 × 430 × 465 mm
Size
165 mm
Maximum CPU cooler height
380 mm
Maximum graphics card length
4×
Number of installed fans
0×
Number of fan bays
Key features of the ASUS A21 PLUS White computer case
- The A21 PLUS case is compatible with hidden-connector motherboards for the cleanest possible cable management
- Supports up to 360mm radiators, graphics cards up to 380mm long, and CPU air coolers up to 165mm high
- Cooling is provided by four pre-installed ARGB fans
- The front panel has a 40% porous mesh for a balance of airflow, dust filtration and RGB visibility
- Behind the motherboard, you'll find a 33mm wide compartment for cable management
- The overall design combines functionality with aesthetics and ensures easy assembly
- The case is suitable for modern builds with an emphasis on a clean look and ventilation
Compatibility and cooling
The ASUS A21 PLUS is a PC case designed for mainstream PC builds with an emphasis on minimalism. It offers support for various AIO coolers and graphics cards, while four pre-installed ARGB fans ensure sufficient airflow for smooth system operation. In addition to supporting standard mini-ITX and micro-ATX motherboards, the case is also compatible with the TUF GAMING B760M-BTF WIFI D4 board, whose connectors and headers are located on the underside for a clean cable layout.
Wide compatibility
Even though it's a micro-ATX case, the A21 PLUS supports up to 360mm radiators, graphics cards up to 380mm in length, and CPU air coolers up to 165mm in height, giving builders plenty of options for their new PC build.
Functional cooling
The front panel mesh of the A21 PLUS case is 40% porous to maximise the balance between airflow and RGB lighting visibility. Four pre-installed ARGB fans provide ample cooling.
Cable management and colour options
The A21 PLUS provides a 33mm wide compartment behind the motherboard to keep your cables tidy. The case is available in two colour options with colour-matched black or white internal I/O cables that complement the overall look of the build.
Precise craftsmanship and functional design
The ASUS A21 PLUS impresses not only with its support for modern components but also with its thoughtful layout and clear cable management. The compact form factor, with dimensions of 220 × 430 × 465 mm, provides enough space for micro-ATX and mini-ITX boards, radiators up to 360mm, and graphics cards up to 380mm in length. The five PCIe slots provide plenty of room for expansion, which you'll appreciate when installing multiple components or planning future upgrades. The 40% porous front mesh ensures a balance between airflow and dust protection, while four pre-installed ARGB fans keep the system cool. Additionally, a 33mm wide compartment behind the motherboard allows for neat cable storage.
Motherboard formats
- mATX (Micro ATX)
- mITX (Mini ITX)
Fans
- Front fan size: 2× 140mm, 3× 120mm
- Rear fan size: 1× 120mm
- Top fan size: 2× 140mm or 3× 120mm
Ports
- 2× USB 3.2 Gen1
- Combined 3.5mm audio jack
Specifications
Usage and size
Colour
Internal structure
External structure
Cooling system
Backlight
Dimensions
| Code: | ACap21w |
| Warranty: | 24 months |
| Links: | Producer's Website: |
| Manufacturer information |
ASUSTek COMPUTER INC. 1F.,No.15, Lide Rd., Beitou Dist., Taipei City 112 Tel: +886-2-2894-3447 Tel: +886-2-2890-7798 https://gr.asus.com/ProductSafety ASUS COMPUTER GmbH Harkortstrasse 21-23 40880 Ratingen Germany, Europe Email: [email protected] ASUS COMPUTER GmbH, Harkortstrasse 21-23, 40880 Ratingen, Germany, Europe, [email protected] ASUS is a symbol of the growth of Taiwan's economy. The firm's beginnings date back to April 2, 1989, when as a small manufacturer of motherboards began his work with a few employees. Today, Asus employs more than 12,500 employees worldwide. ASUS products can be found in almost every category of the information technology marketplace. ASUS is focused on desktops, laptops, phones, optical drives and components. In the manufacture of motherboards, the company is now the dominant player with a staggering 40% market share. 
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