1. Introduction
Thank you for choosing the Aigo AS900 ATX PC Case. This manual provides essential information for the proper assembly, installation, and maintenance of your new computer chassis. Designed for enthusiasts and gamers, the AS900 features a 270° panoramic tempered glass view, robust support for water cooling, and excellent expandability to accommodate high-performance components.
The AS900 chassis boasts a column-free design, offering an unobstructed view of your internal hardware. Its left glass panel features a quick-release mechanism for convenient access. It supports extensive cooling solutions, including up to ten 120mm fans or two 140mm fans, and a 360mm radiator. The interior is thoughtfully designed for easy upgrades and a clean build.

2. Safety Information
- Always disconnect the power supply from the wall outlet before installing or removing any components.
- Wear an anti-static wrist strap to prevent electrostatic discharge (ESD) damage to sensitive components.
- Handle tempered glass panels with care. They are fragile and can shatter if dropped or struck forcefully.
- Keep small parts and screws away from children.
- Ensure proper ventilation around the PC case to prevent overheating.
3. Package Contents
Please check the contents of your package. While specific accessories may vary by region or bundle, a standard package typically includes:
- Aigo AS900 ATX PC Case
- Accessory box (screws, standoffs, cable ties, etc.)
- User Manual (this document)
4. Specifications
The Aigo AS900 PC Case offers robust features and dimensions for a high-performance build:
| Feature | Specification |
|---|---|
| Brand Name | Aigo |
| Model Number | PC Case (AS900) |
| Type | Mid Tower |
| Chassis Type | Desktops |
| Application | Desktop |
| Form Factor | ATX |
| Material | Aluminum Alloy, Tempered glass |
| Case Size (L*W*H) | 434*218*454mm |
| Case Weight | 7.65kg |
| Power Supply Mounted | Bottom |
| Power Model | ATX |
| With Side Panel Window | Yes (Tempered Glass) |
| Front Ports | USB3.0*1 / USB2.0*2 / Power / Reset / HD Audio |
| Expansion Slots | 7 |
| Internal 2.5" Drive Bays | 2 |
| Internal 3.5" Drive Bays | 2 |
| Max GPU Length | 425mm |
| Max CPU Cooler Height | 170mm |
| Radiator Size Support | Top: 360mm, Side: 240mm |
| 120mm Fan Options | Up to 10 |
| 140mm Fan Options | Up to 2 |
| Dust Filters | Top |
| RGB Support | NO RGB (Case itself, fans may vary) |

5. Setup and Installation
This section guides you through the process of installing components into your Aigo AS900 PC case. Ensure you have all necessary tools, including screwdrivers and cable ties.
5.1 Accessing the Interior
The AS900 features a quick-release tempered glass side panel for easy access. Locate the thumb screws on the rear of the case securing the side panel. Unscrew them and carefully pull the glass panel away from the chassis.

5.2 Motherboard Installation
- Install the I/O shield (if not pre-installed on your motherboard) into the rear opening of the case.
- Align your ATX, M-ATX, or ITX motherboard with the standoffs inside the case. Ensure the standoffs match your motherboard's form factor.
- Secure the motherboard with the provided screws.
5.3 Power Supply Unit (PSU) Installation
The AS900 supports ATX power supplies mounted at the bottom of the case.
- Slide your ATX PSU into the designated compartment at the bottom rear of the case.
- Secure the PSU to the case using screws from the rear.
5.4 Storage Drive Installation (HDD/SSD)
The case provides bays for two 3.5" HDDs and two 2.5" SSDs.
- Locate the drive bays/brackets.
- Mount your 3.5" HDDs or 2.5" SSDs into the appropriate brackets and secure them with screws.
- Slide the filled brackets back into their positions until they click into place or are secured with screws.

5.5 Graphics Card (GPU) Installation
The AS900 supports GPUs up to 425mm in length and features 7 expansion slots.
- Remove the necessary PCI-E slot covers from the rear of the case.
- Insert your graphics card into the appropriate PCI-E slot on your motherboard.
- Secure the graphics card to the case with screws.
5.6 Cooling System Installation (Fans & Radiators)
The case offers extensive cooling support:
- Fans: Up to ten 120mm fans or two 140mm fans.
- Radiators: Up to 360mm on the top, and up to 240mm on the side.
- Mount your chosen fans or radiators to the designated mounting points (top, side, rear, bottom).
- Ensure proper airflow direction for optimal cooling. The rear fan steel mesh protection helps improve heat dissipation.


5.7 Cable Management
Utilize the cable routing cutouts and tie-down points behind the motherboard tray to manage cables neatly. This improves airflow and aesthetics.
5.8 Final Assembly
- Once all components are installed and cables are managed, reattach the tempered glass side panel and secure it with the thumb screws.
- Connect your peripherals (monitor, keyboard, mouse, etc.) and power cable.
6. Operating Instructions
Once your PC is fully assembled within the Aigo AS900 case, connect it to a power source and your monitor. Press the power button on the front I/O panel to start your system. The case itself does not require specific operating instructions beyond proper component installation and power connection. Refer to your motherboard and component manuals for detailed operating procedures.
7. Maintenance
Regular maintenance helps ensure optimal performance and longevity of your PC components.
- Dust Filters: The AS900 includes dust filters on the top panel. Regularly remove and clean these filters to prevent dust buildup and maintain good airflow.
- Interior Cleaning: Periodically open the side panel and use compressed air to remove dust from internal components, especially fans and heatsinks.
- Exterior Cleaning: Wipe the exterior surfaces, including the tempered glass panels, with a soft, damp cloth. Avoid abrasive cleaners.
8. Troubleshooting
If you encounter issues after building your PC in the AS900 case, consider the following general troubleshooting steps:
- No Power: Ensure the PSU is switched on, the power cable is securely connected, and all internal power cables (24-pin, CPU, GPU) are properly seated.
- No Display: Check that your monitor is connected to the graphics card (not the motherboard I/O unless using integrated graphics) and that the GPU is fully seated in its PCI-E slot.
- Overheating: Verify that all fans are spinning correctly and installed in the correct orientation for airflow. Ensure CPU cooler and GPU heatsinks are properly mounted. Clean dust filters.
- Loose Connections: Recheck all power and data cables for storage drives, fans, and front panel connectors.
9. User Tips
- Cable Management: Take your time with cable management. The spacious interior allows for clean routing, which significantly improves airflow and the aesthetic appeal of your build, especially with the panoramic glass.
- Fan Configuration: Experiment with different fan configurations (intake/exhaust) to find the optimal balance for your specific components and environment. The case supports a wide range of fan placements.
- Tempered Glass Care: Use a microfiber cloth and a glass cleaner (or just water) to clean the tempered glass panels. Avoid harsh chemicals that could damage the finish.
- Component Compatibility: Always double-check the dimensions of your CPU cooler, GPU, and PSU against the case's maximum clearances before purchasing to ensure a smooth build process.
10. Frequently Asked Questions (FAQ)
- Q: Does this case come with pre-installed fans?
- A: The case itself does not include pre-installed fans. Fans are typically sold separately or as part of specific bundles. Please check your product variant details.
- Q: Can I install an E-ATX motherboard?
- A: The Aigo AS900 is designed to support ATX, M-ATX, and ITX motherboards. E-ATX motherboards may not fit or may obstruct cable routing.
- Q: How do I control the RGB lighting of the fans?
- A: The case itself does not have RGB control. If your fans have RGB, their lighting is typically controlled via your motherboard's RGB software or a dedicated RGB controller included with the fans.
- Q: Is the front panel removable?
- A: The front panel is part of the tempered glass design. The side panels are removable for access, but the main front glass is fixed to provide the 270° panoramic view.
11. Warranty and Support
For warranty information and technical support, please refer to the official Aigo website or contact your retailer. Keep your proof of purchase for warranty claims. This manual provides general guidance; specific issues may require professional assistance.





