ASUS has officially unveiled the Prime AP303, a sleek and compact 44-liter mid-tower ATX case designed to deliver big-build performance in a smaller footprint. Offering support for high-end components, multiple side-panel options, and thoughtful airflow optimizations, the Prime AP303 is built for users who want maximum capability without the bulk of a traditional full tower.

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? Compact Frame, Maximum Compatibility

Despite its space-saving footprint, the Prime AP303 packs serious hardware support. ASUS has engineered every inch of the interior to accommodate enthusiast-grade components, including:

• ATX power supplies up to 180 mm

• Graphics cards up to 360 mm
  (including heavyweight cards like the ROG Astral GeForce RTX 5090)

• A dedicated GPU support bracket to prevent sag and maintain long-term stability

The case also includes a 34 mm cable-management compartment behind the motherboard, making clean and efficient routing easier for builders of all skill levels.

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❄️ Built for Powerful Cooling in a Smaller Space

Cooling capacity is a major highlight of the Prime AP303. ASUS ensures performance hardware stays cool with:

• Support for 360 mm radiators, up to 60 mm thick

• Seven total fan mounting points

• Full chassis coverage with metallic mesh panels for enhanced airflow

The square mesh pattern acts as a quasi-filter, improving intake efficiency and keeping components supplied with fresh air—ideal for high-performance CPUs and next-gen GPUs.

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? Tool-Free Panels & Two Stylish Configurations

ASUS gives users a choice between:

• Tempered glass side panel — perfect for showcasing RGB builds

• Metallic mesh side panel — optimized for airflow and understated styling

Both versions feature tool-free side panel removal, making upgrades and maintenance quick and hassle-free.

Color options include:

• Classic Black

• Clean White

ASUS even color-matches the interior cables to maintain a cohesive and premium aesthetic.

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? Modern Front I/O for Modern Setups

The Prime AP303 comes equipped with a feature-rich I/O panel positioned for easy access—especially when the case sits on top of a desk.

Front I/O includes:

• USB 20 Gbps Type-C port

• Two USB Type-A ports

• Headphone and microphone jacks

Pair the case with a motherboard that supports USB 20 Gbps, and you’ll enjoy lightning-fast external storage transfers right at your fingertips.

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? A Mid-Tower Case That Overdelivers

The ASUS Prime AP303 blends compact dimensions with the versatility and performance potential of a full-sized tower. With high-end GPU support, advanced cooling options, tool-free convenience, and modern connectivity, it’s an ideal choice for builders who want a clean, capable, and future-proof chassis.

Whether you're assembling an RGB showcase or a stealthy airflow-focused build, the Prime AP303 offers the flexibility and engineering to bring your vision to life.