ASUS Prime AP303 - Mesh Panel

The ASUS Prime AP303 is a compact 44-liter ATX case with support for graphics cards up to 360mm long, 360mm radiators up to 60mm thick, and ATX PSUs up to 180mm long.

  • Compact Size with Maximal Capacity: 44-liter footprint supports up to 360mm graphics cards, up to 360mm radiators (60mm max thickness), up to 180mm ATX PSUs
  • Enhanced Rigidity for Graphics Cards: Added bracket supports GeForce RTX™ 50 Series graphics cards from 310mm to 360mm long, reducing sagging and movement
  • Power Cable for High-End Systems: UL-certified power cable delivers 15 amps to ensure stable operation
  • Optimized for Cooling: Support for up to 360mm radiators and up to seven fans handles any thermal scenario
  • Front Panel USB Type-C® Support: A 20Gbps USB Type-C port enables high-speed data transfer speeds
ASUS Prime AP303 - Mesh Panel
ASUS Prime AP303 build

ASUS Prime AP303 - Mesh Panel

Compact Frame. Massive Potential.

The ASUS Prime AP303 is a compact 44-liter ATX chassis that accommodates 360mm radiators up to 60mm thick and graphics cards up to 360mm long. It features a graphics card bracket and holder to keep cards firmly mounted, plus an internal power cable that delivers 15 amperes to maintain stable power delivery for high-end PC builds.

  • Compact ATX Case with Max. Capacity

  • 360mm Graphics Card

  • Structural Graphics Card Bracket

ASUS Prime AP303 with mesh side panel overview video

Exceptional Space Efficiency

The AP303 is designed to maximize internal space, enabling installation of graphics cards up to 360mm long, radiators up to 360mm long and ATX power supplies up to 180mm long.

ASUS Prime AP303 with line art of radiator, motherboard, graphics card, and PSU showing the compatibility
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360mm AIO Cooler

60mm clearance for thicker radiators and fans to enhance cooling

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ATX Motherboard

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180mm ATX PSU

Support for up to 1200-watt ATX power supplies (up to 180mm long)

Find The Suitable Power Supplies

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360mm Graphics Card

Compatible with ASUS graphics cards such as the ROG Astral GeForce RTX™ 5090

Find Suitable NVIDIA® Graphics Cards

*Image for illustration only

Superior Stability Under Heavy Loads

Alongside the graphics card holder is a graphics card bracket that supports GeForce RTX 50 Series graphics cards from 310mm to 360mm long. It securely mounts the graphics card with screws, reducing sagging and movement.

Side view of the case with graphics card installed and highlighted 南宫28NG相信品牌力量(中国最佳)有限公司-官网

Graphics Card Bracket

*Image for illustration only

  • Side angle of ASUS Prime AP303 with airflow direction

    Efficient Cooling

    With support for up to 360mm radiators and up to seven fans, the AP303 is primed to deal with the thermal scenarioses of high-performance hardware.

  • Highlight detailing ASUS Prime AP303 mesh panel design 南宫28NG相信品牌力量(中国最佳)有限公司-官网

    Quasi-Filter Mesh Panels

    Metallic quasi-filter mesh panels are designed to enhance airflow and minimize dust ingress, delivering both performance and protection in a sleek style.

Highlight of the internal power cable of ASUS Prime AP303

15 AMPERE

Pioneering Cable for High-End Systems

The UL-certified internal power cable delivers 15 amperes of current to ensure stable operation for high-end systems with a 1200W power supply.

Power cable showing 15 ampere rating and a UL logo
  • Close-up of the front panel with USB Type-C port Close-up of the front panel with USB Type-C port

    20 Gbps Connectivity

    USB Type-C® Support

    AP303 includes one 20Gbps Type-C port and two USB 3.0 ports for future-ready and backward-compatible connectivity.

  • Close-up of the unified front I/O connector, with animation

    Unified Front I/O Header

    A thoughtful header design makes connecting Front Input/Output (FIO) components to the motherboard easy.

  • Close-up of the ASUS Prime AP303 34mm-wide cable management space

    34 mm Cabling Space

    Organized Cabling

    A 34mm-wide compartment behind the motherboard provides ample space to neatly organize cables, despite the relatively compact dimensions of the chassis.

*Image for illustration only

Tool-Free Side Panels

The side panels of the AP303 use a simple but secure clip mechanism to attach to the case. This makes them easy to remove, providing easy access to the interior of the chassis.

ASUS Prime AP303 black and white versions, showing mesh panel models side by side

Multiple Colors and Styles

The AP303 is available in either black or white, giving you options to create a rig that blends in or stands out. In addition, the tempered glass side panel version provides an elegant appearance, whereas the mesh side panel version boosts airflow efficiency and thermal performance.

  • Products certified by the Federal Communications Commission and Industry Canada will be distributed in the United States and Canada. Please visit the ASUS USA and ASUS Canada websites for information about locally available products.
  • All specifications are subject to change without notice. Please check with your supplier for exact offers. Products may not be available in all markets.
  • Specifications and features vary by model, and all images are illustrative. Please refer to specification pages for full details.
  • PCB colour and bundled software versions are subject to change without notice.
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