ASUS Prime AP303 TG White ATX Mid-Tower Case - 44L
ASUS
ASUS Prime AP303 TG White ATX Mid-Tower Case - 44L
The ASUS Prime AP303 TG White is a compact 44-liter ATX mid-tower case designed for builders who need full ATX motherboard support without a large footprint. It accommodates graphics cards up to 360mm long, 360mm radiators up to 60mm thick, and ATX power supplies up to 180mm long, making it suitable for high-end gaming and workstation builds in a space-conscious package.
Why this product
Compact 44L footprint with full ATX support
Fits ATX, Micro-ATX, and Mini-ITX motherboards in a chassis smaller than most mid-towers, without sacrificing expansion capacity.
360mm graphics card support with anti-sag bracket
Dedicated bracket supports cards up to 360mm long, including RTX 50 Series, with extra rigidity to prevent sagging and movement.
High-capacity cooling: 360mm radiator ready
Top-mounted 360mm radiator support (up to 60mm thick) plus rear 120mm bay and room for up to 7 fans total handles demanding thermal loads.
Fast front-panel connectivity
20Gbps USB Type-C port on the front panel alongside two USB 3.2 Gen 1 ports for modern peripherals and external storage.
Easy-access cable management
34mm-wide rear compartment and removable bottom dust filter simplify cable routing and maintenance despite the compact dimensions.
- Form FactorATX Mid-Tower
- Volume44 liters
- Motherboard SupportATX, Micro-ATX, Mini-ITX
- Max GPU Length360 mm
- Max Radiator (Top)360 mm
- Max PSU Length180 mm
- Weight7.8 kg
- ColorWhite
- SKUASU-3322
- EAN4711636165167
- ATX, Micro-ATX, and Mini-ITX motherboards fit without modification.
- Graphics cards up to 360mm long, including high-end RTX 50 Series cards.
- ATX power supplies up to 180mm long; most standard 80+ certified units fit.
- CPU coolers limited to 165mm maximum height; some dual-tower and tall air coolers will not fit.
- Radiators up to 60mm thick on top mount; some AIO coolers with thick radiators may require careful installation or removal of top fans.
Best for
- High-end gaming builds with modern graphics cards
- Custom water-cooling enthusiasts needing 360mm radiator support
- Desk-space-limited builders who refuse to compromise on ATX platform
- Content creators and streamers wanting compact workstation footprint
Trade-offs
- Tall air coolers. 165mm CPU cooler height limit rules out many dual-tower designs and premium air solutions.
- Long power supplies. PSUs over 180mm in length will not fit; modular or SFX units may be necessary.
- Builders using triple-slot graphics cards. Physical card support tops out at 360mm length; some enthusiast cards exceed this.
- Storage-heavy builds. Only 3 total storage bays (1 combo 2.5"/3.5", 2 x 2.5") limits multi-drive configurations.
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.
AP303 includes one 20Gbps Type-C port and two USB 3.0 ports for future-ready and backward-compatible connectivity. A thoughtful header design makes connecting Front Input/Output (FIO) components to the motherboard easy.
A 34mm-wide compartment behind the motherboard provides ample space to neatly organize cables, despite the relatively compact dimensions of the chassis.
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. 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.
General
| Brand | ASUS |
|---|---|
| Model | Prime AP303 |
| Panel Type | Tempered Glass |
| Dimensions (W×H×D) | 215 × 425 × 485 mm |
| Part Number | 90DC00V3-B39010 |
Compatibility
| Motherboard Support | Mini-ITX, Micro-ATX, ATX |
|---|---|
| Maximum GPU Length | 360 mm |
| Maximum PSU Length | 180 mm |
| Maximum CPU Cooler Height | 165 mm |
| Expansion Slots | 7 |
Cooling & Airflow
| Top Radiator Support | 360 mm, 280 mm, 240 mm, 140 mm, 120 mm |
|---|---|
| Rear Radiator Support | 120 mm |
| Top Fan Support | 3 × 140 mm or 3 × 120 mm |
| Rear Fan Support | 1 × 120 mm |
| Pre-installed Fans | 1 × 120 mm (rear) |
| Max Radiator Thickness (Top) | 60 mm |
Storage & Connectivity
| Drive Bays | 1 × 2.5"/3.5" combo, 2 × 2.5" |
|---|---|
| Front USB Ports | 1 × USB 3.2 Gen 2×2 Type-C (20Gbps), 2 × USB 3.2 Gen 1 |
| Front Audio Jack | 1 × 3.5 mm headphone/microphone |
| Cable Management Space | 34 mm behind motherboard tray |
| Dust Filters | Removable bottom filter |
Shipping
All our products are shipped from the United Kingdom within 24 to 48 hours of purchase. See our Shipping and Returns page for full details.
Returns
- Tech Syndicate offers a full money-back guarantee on all purchases made in our store. If you are not satisfied with your purchase, we will provide a full refund, no questions asked.
- Refunds are available within 45 days of delivery.
- After the 45-day period you are no longer eligible for a refund, so we encourage you to try the product within the first few weeks to make sure it fits your needs.