Introduction
The AZZA Neptune CSAZ-491 is a high-performance ATX Mid-Tower computer case designed for optimal airflow and versatile component compatibility. Featuring a full mesh front panel and pre-installed addressable RGB fans, it provides excellent cooling capabilities and customizable aesthetics. This manual provides essential information for setting up, operating, and maintaining your computer case.
Setup and Installation
Before beginning installation, ensure you have all necessary components and tools. Refer to your motherboard and component manuals for specific installation instructions.
1. Preparing the Case
- Carefully unbox the AZZA Neptune CSAZ-491 case.
- Remove the side panels by unscrewing the thumbscrews at the rear of the case. The tempered glass panel is fragile; handle with care.
2. Motherboard Installation
- Install the I/O shield into the rear opening of the case.
- Align your ATX, Micro ATX, or Mini ITX motherboard with the standoffs inside the case.
- Secure the motherboard using the provided screws.

Figure 1: Internal Layout and Component Compatibility. This image illustrates the internal layout of the AZZA Neptune case, highlighting the motherboard support area (A), maximum CPU cooler height (B) of 170mm, and maximum GPU length (C) of 300mm with a width of less than 155mm. It shows the spacious interior designed for various component sizes.
3. Storage Device Installation
- The drive cage tray supports 1 x 3.5" HDD.
- The top of the drive cage supports 1 x 2.5" SSD.
- The right side panel supports 1 x 2.5" SSD.
- Mount your storage devices securely in the designated bays.

Figure 2: Flexible Storage Options. This diagram illustrates the various mounting points for storage devices within the case, including a 3.5" HDD bay and multiple 2.5" SSD mounting locations, ensuring ample space for your data storage needs.
4. Power Supply Installation
- Install your power supply unit (PSU) into the bottom mount area of the case.
- Secure the PSU with screws from the rear of the case.
- Route power cables through the cable management cutouts.
5. Fan and Radiator Installation
- The case comes with 4 x 120mm pre-installed addressable RGB fans in the front.
- Additional fan support:
- Top: 3 x 120mm or 2 x 140mm fans
- Rear: 1 x 120mm fan
- Side (MB side): 3 x 120mm fans
- Above PSU Shroud: 2 x 120mm fans (for direct GPU airflow)
- Radiator support:
- Top: Up to 360mm radiator
- MB Side: Up to 240mm radiator
- Connect ARGB fans to the motherboard's ARGB header or the integrated LED controller.

Figure 3: Ultimate Thermal Performance. This image illustrates the extensive fan support within the AZZA Neptune case, showing locations for up to 9 fans (3x120mm or 2x140mm top, 1x120mm rear, 3x120mm side, and 2x120mm above PSU shroud), ensuring superior cooling capabilities.

Figure 4: Massive Cooling Potential. This diagram highlights the radiator compatibility of the AZZA Neptune case, indicating support for a 360mm radiator on the top and a 240mm radiator on the motherboard side, allowing for advanced liquid cooling solutions.
6. Front I/O Panel Connections
- Connect the front panel cables (Power, LED, HD Audio, USB 2.0, USB 3.0) to the corresponding headers on your motherboard. Refer to your motherboard manual for header locations.

Figure 5: Intuitive I/O Panel. This image provides a detailed view of the top I/O panel of the AZZA Neptune case, clearly labeling the Power button, LED button, HD Audio & Mic jacks, two USB 2.0 ports, and one USB 3.0 port for convenient access.
Operating Instructions
Powering On/Off
- Press the Power button on the top I/O panel to turn on your computer.
- To turn off, use the operating system's shutdown function or press and hold the Power button for several seconds.
Controlling ARGB Lighting
- The pre-installed ARGB fans can be controlled via the LED button on the top I/O panel. Press the button to cycle through different lighting modes.
- For advanced customization, if your motherboard supports Addressable RGB (ARGB) synchronization, connect the ARGB cables from the fans to your motherboard's ARGB header. This allows you to control the lighting directly through your motherboard's RGB software.
Maintenance
Regular maintenance helps ensure optimal performance and longevity of your computer case.
- Dust Cleaning: Periodically clean dust filters and internal components using compressed air or a soft brush. Dust accumulation can impede airflow and affect cooling performance.
- Exterior Cleaning: Wipe the exterior surfaces with a soft, damp cloth. Avoid abrasive cleaners or solvents that may damage the finish or tempered glass.
- Cable Management: Ensure cables are neatly routed to maintain good airflow and prevent interference with fans.

Figure 6: Wonderful Unrestricted Airflow. This diagram demonstrates the airflow path within the AZZA Neptune case. Air is drawn in through the full mesh front panel and the bottom solid panel with grids, then efficiently exhausted from the top and rear, ensuring excellent heat dissipation and ventilation throughout the chamber.
Troubleshooting
This section addresses common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Computer does not power on. | Loose power connections, faulty PSU, incorrect front panel wiring. |
|
| Fans are not spinning or RGB not working. | Loose fan connections, incorrect ARGB header connection, software issue. |
|
| Poor airflow or high temperatures. | Dust accumulation, incorrect fan orientation, obstructed airflow. |
|
Specifications
| Feature | Detail |
|---|---|
| Model Name | CSAZ-491 Neptune |
| Case Type | ATX Mid Tower |
| Motherboard Compatibility | ATX, Micro ATX, Mini ITX |
| Dimensions (L x W x H) | 17.1" x 8.6" x 17.9" (435mm x 218mm x 455mm) |
| Material | Tempered Glass, Plastic |
| Color | Black / Burlywood |
| External I/O Ports | Power Button, LED Button, HD Audio, USB 2.0 x2, USB 3.0 x1 |
| Drive Bays | 1 x 3.5" HDD, 2 x 2.5" SSD |
| Max CPU Cooler Height | 170mm |
| Max GPU Length | 300mm (Width < 155mm) |
| Fan Support |
|
| Radiator Support |
|
| Power Supply Mounting | Bottom Mount |
| Item Weight | 17.16 pounds |
Warranty and Support
For warranty information and technical support, please contact AZZA USA directly. Keep your proof of purchase for warranty claims.
Manufacturer: AZZA
Seller: AZZA USA
For the most up-to-date support resources, please visit the official AZZA website or contact their customer service department.





