ASUS Prime AP303 ATX Mid-Tower PC Case – Tempered Glass White

Product Overview

The ASUS Prime AP303 Tempered Glass Edition is a sleek and compact 44-liter ATX mid-tower chassis designed for modern gaming PCs, performance desktops, and clean professional builds. Combining efficient internal space utilization, premium tempered glass aesthetics, excellent cooling flexibility, and structural reinforcement for modern heavyweight GPUs, the Prime AP303 delivers an ideal balance of performance, style, and practicality.

Compact Footprint with Full-Size Hardware Support

Despite its compact 44-liter chassis design, the Prime AP303 offers exceptional compatibility for high-performance hardware, making it ideal for builders who want a space-efficient case without sacrificing component support.

Hardware compatibility includes:
• Graphics cards up to 360mm long
• 360mm radiators up to 60mm thickness
• ATX power supplies up to 180mm long
• CPU coolers up to 165mm tall

Perfect for powerful modern gaming and productivity systems.

Premium Tempered Glass Showcase Design

The tempered glass side panel offers a clean showcase view of your internal hardware, RGB components, and cooling setup, making the AP303 ideal for stylish modern builds.

Its elegant white exterior delivers a refined minimalist aesthetic suitable for gaming and professional setups alike.

Enhanced Structural Rigidity for Large GPUs

Built with reinforced structural support, the Prime AP303 includes a dedicated graphics card bracket engineered to help stabilize heavy flagship GPUs, including large modern cards in the 310mm–360mm range.

Benefits include:
• Reduced GPU sag
• Improved hardware stability
• Better long-term durability
• Cleaner internal presentation

Especially useful for next-generation high-end graphics cards.

Optimized Cooling Architecture

The AP303 is designed to handle demanding thermal loads with flexible air and liquid cooling support.

It supports up to seven cooling fans, enabling highly efficient airflow for gaming and workstation systems.

Extensive Liquid Cooling Compatibility

Radiator support includes:

Top:
• 120mm
• 140mm
• 240mm
• 280mm
• 360mm

Rear:
• 120mm

Supports radiators up to 60mm thickness, making it compatible with premium AIO liquid coolers.

Air Cooling Support

Fan compatibility includes:

Top:
• 3 × 120mm
• 3 × 140mm

Rear:
• 1 × 120mm

Includes 1 pre-installed 120mm rear fan (model dependent).

High-Speed Front I/O Connectivity

Modern front-panel connectivity provides convenient access for peripherals and accessories, including:
• 1 × USB 3.2 Gen 2×2 Type-C (20Gbps)
• 2 × USB 3.2 Gen 1 Type-A
• 1 × headphone / microphone combo jack

Ideal for fast storage devices, accessories, and modern workstation peripherals.

Clean Cable Management Design

With up to 34mm cable routing clearance, the Prime AP303 helps builders maintain organized cable layouts, improving airflow and internal aesthetics.

A clean layout simplifies installation and future upgrades.

Storage Expansion

Flexible storage support includes:
• 2 × dedicated 2.5″ bays
• 1 × combo 2.5″/3.5″ drive bay

Suitable for SSD and HDD expansion.

Power Delivery for High-End Builds

The included UL-certified power cable rated for 15 amps ensures stable power delivery for demanding modern gaming and workstation systems.

Designed to support reliable operation under load.

Dust Protection & Maintenance

A removable bottom dust filter helps reduce dust buildup and simplifies long-term maintenance for cleaner internal operation.

Motherboard Compatibility

Supports multiple motherboard form factors, including:
• ATX
• Micro-ATX
• Mini-ITX

Suitable for a wide range of mainstream and enthusiast builds.

Dimensions & Weight

Dimensions:
215 × 425 × 485 mm

Weight:
Tempered Glass Edition: 7.8 kg

A balanced compact chassis with strong premium construction.

Ideal For

Perfect for gaming PCs, productivity desktops, creator workstations, clean white showcase builds, high-performance ATX systems, and modern liquid-cooled setups.

Box Contents

Included in the package:
• ASUS Prime AP303 Tempered Glass White Case
• GPU support bracket
• Pre-installed rear fan (model dependent)
• Installation hardware
• User documentation