Asus A31 casing without fan

General Information

Drive Bays & Expansion

Front I/O Ports

Design & Build

Cooling & Radiator Support

Clearance & Compatibility

Physical Specifications

ASUS A31 Mid Tower Casing (Without Fan) | Tempered Glass | USB 3.2 Gen 2×2 Type-C | BTF Motherboard Compatible

Introduction – Meet the ASUS A31 Mid Tower Casing

Discover elegance, power, and precision engineering in one stunning design — introducing the ASUS A31 Mid Tower Case (Without Fan). Crafted for PC builders who value performance and aesthetics, this casing blends functionality with premium build quality.

Designed to support ATX, Micro-ATX, and Mini-ITX motherboards, including BTF (Back-To-The-Future) motherboard compatibility, the ASUS A31 offers future-ready versatility. With dual tempered glass panels, modern front I/O ports, and superior cooling potential, this case ensures a perfect balance of airflow, cable management, and style.

Whether you’re building a high-end gaming PC, a sleek workstation, or a showpiece rig, the ASUS A31 delivers an unmatched foundation — robust, elegant, and ready for your next-gen hardware.

Performance & Features – Functionality Meets Freedom

Spacious Interior for High-End Components

The ASUS A31 provides ample room for performance components. It supports GPUs up to 380mm, CPU coolers up to 165mm, and PSUs up to 200mm — giving you flexibility for even the most powerful hardware setups.

This spacious layout ensures easy assembly, efficient airflow, and hassle-free upgrades — perfect for gamers, modders, and professionals who demand flexibility and clean design.

BTF Motherboard Compatibility – The Future of Cable-Free Builds

The BTF motherboard design moves power connectors and cables to the back of the motherboard, creating an ultra-clean aesthetic inside the case. The ASUS A31 is fully BTF-compatible, ensuring perfect integration for clutter-free cable management and an immaculate build appearance.

If you’re aiming for a minimalist setup that looks professional from every angle, this feature makes the ASUS A31 a top-tier choice.

Dual Tempered Glass Panels – Showcase Your Build

Show off your components in style with tempered glass panels on both the front and left side. The panels offer a crystal-clear view of your PC’s internals, highlighting RGB lighting and component arrangement.

The durable tempered glass construction resists scratches and adds a premium finish that complements both gaming and professional setups.

Optimized Cooling Support – Airflow That Performs

Although the ASUS A31 comes without pre-installed fans, it’s designed for maximum cooling versatility. It supports:

• Top: 3 × 120mm or 2 × 140mm fans (up to 360mm radiator)

• Rear: 1 × 120mm or 1 × 140mm fan (up to 120mm radiator)

This layout enables efficient heat dissipation, keeping your system cool even under load. Pair it with your preferred high-performance fans or liquid cooling setup for complete thermal control.

Dust Filters for Long-Term Cleanliness

The case features removable dust filters at the top and bottom to keep your PC clean and efficient. These filters are easy to remove and wash, ensuring that airflow remains unrestricted while protecting internal components from dust buildup.

Why You’ll Love the ASUS A31 – Designed for Builders

1. Powerful Airflow Engineering

The ASUS A31’s airflow-optimized structure ensures cool operation. Its ventilated top and rear sections promote natural heat exhaust, while the front tempered glass design allows easy customization with ARGB intake fans.

2. Advanced Cable Management

Behind the motherboard tray, you’ll find 34mm of cable management space — plenty of room to route and hide cables neatly. Combined with BTF support, it helps maintain a clean look and efficient cooling inside the case.

3. Expandable Storage Options

The case includes two 2.5″/3.5″ combo bays, providing flexibility for both SSDs and HDDs. Whether you’re building for speed or capacity, the ASUS A31 makes it easy to balance performance and storage needs.

4. Premium Build Quality

Constructed with solid steel panels and thick tempered glass, the ASUS A31 weighs 8.2kg, giving it a durable, sturdy feel. Every edge, vent, and bracket is precision-engineered to ensure long-lasting reliability and smooth assembly.

Design & Connectivity – Modern Form, Functional Flow

Clean, Minimalistic Design for Modern Builds

The ASUS A31 emphasizes a sleek and balanced look. Its refined edges, symmetrical panels, and subtle branding make it perfect for minimalist gaming setups or professional workstations.

The front tempered glass panel adds visual depth, while its clean structure blends seamlessly into any setup — whether RGB-heavy or understated.

Front I/O Ports – Fast and Future-Proof Connectivity

The front I/O panel is positioned conveniently for easy access and includes:

• 2 × USB 3.2 Gen 1 ports

• 1 × USB 3.2 Gen 2×2 Type-C port

• 1 × Headphone/Microphone combo jack

These ports support modern peripherals, ensuring ultra-fast data transfer, device charging, and audio connectivity for gamers, creators, and professionals.

Support for Large Radiators – Perfect for Water-Cooling Builds

The ASUS A31 is ideal for custom water-cooled systems. It supports:

• Top-mounted radiators up to 360mm

• Rear-mounted radiators up to 120mm

This flexibility allows builders to install powerful AIO or custom loop solutions without space limitations.

Ease of Use & Maintenance

Tool-Free Installation for Major Components

The ASUS A31 is designed for builders who want a simple, tool-free experience. Its modular drive trays and removable panels make assembly fast and stress-free — even for first-time PC builders.

Removable Filters and Easy Cleaning

The top and bottom dust filters slide out smoothly, making cleaning a breeze. Regular maintenance helps sustain airflow and extend the life of your components.

Ample Clearance for Compatibility

With 380mm GPU clearance and 165mm CPU cooler clearance, this case fits flagship GPUs and tower coolers with ease. You can confidently install large graphics cards like NVIDIA RTX 4090 or AMD Radeon RX 7900 series without worrying about spacing issues.

FAQs About ASUS A31 Mid Tower Case

Does the ASUS A31 come with pre-installed fans?

No, it doesn’t include any fans, allowing users to choose their preferred fan brands and configurations.

Is the ASUS A31 compatible with BTF motherboards?

Yes, it’s fully compatible with BTF motherboards, ensuring clean and cable-free builds.

What is the maximum GPU length supported?

It supports GPUs up to 380mm, accommodating high-end graphics cards.

Can I mount a 360mm radiator on this case?

Yes, the top panel supports up to 360mm radiators, ideal for water-cooling systems.

How is cable management handled?

With 34mm cable routing space and BTF motherboard support, cable management is simple and tidy.

What materials are used in the case?

The ASUS A31 features a steel chassis with dual tempered glass panels for strength and elegance.