ASUS returns with another thoughtful chassis design, introducing the Prime AP303, a 44-liter mid-tower case built to handle **high-end** components without occupying excessive **desk space**. This model reimagines what a compact ATX case can be, giving builders room for long GPUs, thick radiators, and a clean layout that feels purposefully engineered.
Compact Footprint, Serious Hardware Support
Despite its modest physical presence, the Prime AP303 accommodates **graphics cards** up to 360 mm and power **supplies** up to 180 mm long. A reinforced GPU bracket supports NVIDIA GeForce RTX 50 Series cards between 310–360 mm, helping reduce long-term sag on heavy cooling shrouds. ASUS also includes a UL-certified internal power cable capable of delivering 15 amps, ensuring stable delivery for demanding builds. The 34 mm cable-management space behind the motherboard tray provides enough room to keep wiring tidy.
Cooling Options Built for Performance
The AP303’s compact body still fits a **360 mm radiator** up to 60 mm thick, opening the door for robust **liquid cooling** setups. Seven available fan mounting points allow airflow to be tailored for gaming, workstation, or overclocked builds. A quasi-filter metallic mesh wraps most of the chassis, enhancing intake performance while maintaining dust resistance. Regardless of whether users opt for mesh or glass, each version prioritizes cooling efficiency.
Tool-Free Side Panels and Clean Aesthetic
ASUS offers the case with either **tempered glass** or side **mesh panels**, both using tool-free mechanisms that simplify assembly and upgrades. The interior cables are color-matched to the chassis, available in black or white, giving the final build a cohesive look. Whether someone prefers a stealthy blackout rig or a bright Moonlight White setup, the AP303 fits neatly into modern gaming and creator desktops.
Generous Front I/O for Everyday Convenience
Front-panel connectivity includes a **USB Type-C** 20 Gbps port and two **USB Type-A** ports, complemented by discrete headphone and microphone jacks. The placement favors users who keep their PC on a desk, making quick peripheral swaps far more practical. Combined with its cooling layout and component clearance, the AP303 rounds out a versatile chassis ready for multiple build styles.
In conclusion, the ASUS Prime AP303 brings premium component support to a compact mid-tower format. It balances airflow, usability, and aesthetics while leaving room for enthusiast hardware. Pricing and availability vary by region, and full details can be found through ASUS. ASUS closes the gap between compact and capable, offering a case suited for modern high-performance systems.
| Specification | Details |
|---|---|
| Case Type | 44L Compact Mid-Tower ATX |
| GPU Support | Up to 360 mm, bracket supports 310–360 mm heavy GPUs |
| Radiator Support | Up to 360 mm length, up to 60 mm thickness |
| PSU Support | Up to 180 mm |
| Cooling | 7 fan mounting points, quasi-filter mesh design |
| Side Panels | Tempered Glass or Metallic Mesh (tool-free) |
| Front I/O | USB 20Gbps Type-C, 2× USB Type-A, headphone & mic ports |
| Color Options | Black / White with matched internal cables |
| Special Feature | UL-certified 15A internal power cable |
