Introduction
This manual provides detailed instructions for the installation, operation, and maintenance of your Xigmatek Aquarius Plus Black ATX PC Case. Please read this manual thoroughly before beginning installation to ensure proper setup and safe use of your new PC case.
The Xigmatek Aquarius Plus Black is a mid-tower gaming PC case designed to accommodate ATX, Micro-ATX, and Mini-ITX motherboards. It features excellent cooling potential with support for up to 10 x 120mm fans, including 7 pre-installed ARGB 120mm AY120 fans. The case also offers ample space for a 360mm graphics card, a 158mm CPU cooler, and includes 4 drive bays (2 x 3.5" and 2 x 2.5"/3.5"). Its aesthetic design includes two seamless tempered glass panels and three dust filters for protection.
Safety Information
- Always disconnect the power supply from the wall outlet before installing or removing any components.
- Handle all components with care to prevent damage from electrostatic discharge (ESD). Consider using an anti-static wrist strap.
- Avoid placing the PC case in direct sunlight, near heat sources, or in areas with high humidity.
- Ensure proper ventilation around the case to prevent overheating.
- Keep small parts and packaging materials away from children.
- Do not attempt to modify the case structure. Unauthorized modifications may void your warranty and pose safety risks.
Package Contents
Verify that all items are present in the package:
- Xigmatek Aquarius Plus Black ATX PC Case
- 7 x 120mm ARGB AY120 Fans (pre-installed)
- Accessory kit (screws, standoffs, cable ties)
- User Manual (this document)
Features
- Mid-Tower Design: Supports ATX, Micro-ATX, and Mini-ITX motherboards.
- Advanced Cooling: Pre-installed with 7 x 120mm ARGB AY120 fans; supports up to 10 x 120mm fans.
- Tempered Glass Panels: Two seamless tempered glass panels for a clear view of internal components.
- Ample Storage: 4 drive bays (2 x 3.5" HDD, 2 x 2.5"/3.5" SSD/HDD).
- Component Clearance: Supports graphics cards up to 360mm and CPU coolers up to 158mm.
- Dust Filtration: Three dust filters included to protect internal components.
- Front I/O: 1 x USB 2.0, 3 x USB 3.0 ports.
Setup and Installation
Follow these steps to install your PC components into the Xigmatek Aquarius Plus case.
1. Prepare the Case
Carefully remove the tempered glass side panels by unscrewing the thumb screws at the rear of the case. Place the panels on a soft, flat surface to prevent scratches.

Image: The bare chassis of the Xigmatek Aquarius Plus, showing its internal structure before component installation.
2. Install the Motherboard
- Identify the correct standoff positions for your ATX, Micro-ATX, or Mini-ITX motherboard. The case may have pre-installed standoffs or require you to install them using the provided accessory kit.
- Place the motherboard I/O shield into the rear opening of the case.
- Carefully align your motherboard with the standoffs and I/O shield, then gently lower it into place.
- Secure the motherboard with the appropriate screws from the accessory kit. Do not overtighten.

Image: An internal view of the Xigmatek Aquarius Plus case, illustrating the motherboard tray and fan placement.
3. Install Storage Drives
The case supports 2 x 3.5" HDDs and 2 x 2.5"/3.5" SSDs/HDDs.
- Locate the drive bays. Typically, 3.5" bays are found in a cage near the power supply shroud, and 2.5" mounts are on the back of the motherboard tray.
- For 3.5" drives, slide the drive into the bay and secure it with screws.
- For 2.5" drives, mount them to the designated trays or screw points on the motherboard tray.
4. Install the Power Supply Unit (PSU)
The Xigmatek Aquarius Plus supports bottom-mounted PSUs.
- Slide the PSU into its designated compartment at the bottom rear of the case.
- Secure the PSU to the case with screws from the rear.
- Route the necessary power cables through the cable management cutouts to the motherboard and other components.
5. Install Expansion Cards (e.g., Graphics Card)
The case has 4 expansion slots.
- Remove the necessary expansion slot covers from the rear of the case.
- Insert your graphics card or other expansion card into the appropriate PCIe slot on your motherboard.
- Secure the card with a screw to the case.
6. Connect Front I/O Cables
Connect the front panel cables (USB 2.0, USB 3.0, HD Audio, Power Switch, Reset Switch, Power LED, HDD LED) to their corresponding headers on your motherboard. Refer to your motherboard manual for exact header locations.
7. Cable Management
Utilize the cable management cutouts and tie-down points behind the motherboard tray to route and secure cables. This improves airflow and aesthetics.
8. Reattach Panels
Once all components are installed and cables are managed, carefully reattach the tempered glass side panels and secure them with the thumb screws.

Image: The Xigmatek Aquarius Plus case fully assembled with internal components, showcasing its dimensions (41.5cm D x 28cm W x 42.7cm H).
Operating Instructions
After successful installation, connect your peripherals (monitor, keyboard, mouse) and power cable to the PSU. Press the power button on the front panel to start your system.
ARGB Fan Control
The pre-installed ARGB fans are typically connected to a fan controller or directly to an ARGB header on your motherboard. Refer to your motherboard's manual or the fan controller's instructions for details on how to customize the lighting effects and fan speeds.
Maintenance
Regular maintenance helps ensure optimal performance and longevity of your PC components.
- Dust Filters: The Xigmatek Aquarius Plus includes three dust filters. Regularly remove and clean these filters to prevent dust buildup inside the case. Use compressed air or a soft brush.
- Internal Cleaning: Periodically open the case and use compressed air to remove dust from fans, heatsinks, and other components. Ensure the system is powered off and unplugged before cleaning.
- Tempered Glass Panels: Clean the tempered glass panels with a soft, lint-free cloth and a glass cleaner designed for electronics. Avoid abrasive materials.
Troubleshooting
If you encounter issues, consider the following common troubleshooting steps:
- System Not Powering On:
- Check if the power cable is securely connected to the PSU and the wall outlet.
- Ensure the PSU switch is in the 'ON' position.
- Verify that the front panel power switch cable is correctly connected to the motherboard header.
- Confirm all internal power cables (24-pin ATX, CPU, GPU) are properly seated.
- Fans Not Spinning/ARGB Not Lighting Up:
- Check fan power connections to the motherboard or fan controller.
- Verify ARGB connections to the motherboard or controller.
- Ensure fan controller is powered (if applicable).
- USB Ports Not Working:
- Confirm the front panel USB cables are correctly connected to the motherboard's USB headers.
For more complex issues, consult the manuals for your individual PC components (motherboard, GPU, PSU) or contact Xigmatek customer support.
Specifications
| Model Name | Aquarius Plus Black |
| Model Number | EN46423 |
| Case Type | Mid-Tower |
| Motherboard Compatibility | ATX, Micro-ATX, Mini-ITX |
| Dimensions (D x W x H) | 41.5 cm x 28 cm x 42.7 cm |
| Weight | 7 kg |
| Material | Tempered Glass, Steel |
| Expansion Slots | 4 |
| Drive Bays | 2 x 3.5" HDD, 2 x 2.5"/3.5" SSD/HDD |
| Pre-installed Fans | 7 x 120mm ARGB AY120 Fans |
| Max Fan Support | Up to 10 x 120mm fans |
| Max GPU Length | 360 mm |
| Max CPU Cooler Height | 158 mm |
| PSU Mounting | Bottom |
| Front I/O Ports | 1 x USB 2.0, 3 x USB 3.0 |
| Cooling Method | Air |
| Lighting | RGB (on fans) |
Warranty and Support
For warranty information and technical support, please refer to the official Xigmatek website or contact your local retailer. Keep your proof of purchase for warranty claims.