RUIX OV303
RUIX OV303 ATX Mid-Tower PC Case User Manual
Model: OV303 | Brand: RUIX
Welcome to Your RUIX OV303 PC Case Manual
This manual provides comprehensive instructions for setting up, operating, and maintaining your RUIX OV303 ATX Mid-Tower PC Case. Designed for high-airflow and aesthetic appeal, this case features pre-installed ARGB PWM fans, panoramic tempered glass, and versatile component compatibility. Please read this manual carefully before beginning your PC build to ensure proper installation and optimal performance.
Key Features
- Pre-Installed Fans: Four high-performance 120mm ARGB prism gaming fans are pre-installed for immediate cooling and vibrant lighting.
- Panoramic Tempered Glass: Front and side panels feature tempered glass for an expansive view of your internal components.
- Optimized Ventilation & Dust Protection: Supports up to 10 fans or a 360mm AIO liquid cooler. Includes magnetic dust filters on top and bottom for easy cleaning and system longevity.
- Spacious Interior: Accommodates GPUs up to 420mm, two 3.5-inch HDDs, and one 2.5-inch HDD, offering ample space for various configurations.
- Modern Connectivity: Equipped with high-speed USB 3.0 and Type-C ports on the front I/O for convenient peripheral access.
- Built-in GPU Support Bracket: An integrated bracket provides essential support for heavy graphics cards, preventing sag and enhancing system stability.
Product Overview
The RUIX OV303 ATX Mid-Tower PC Case is engineered for both performance and visual appeal. Below is an overview of its external design and key functional areas.

Figure 1: Front-side view of the RUIX OV303 ATX Mid-Tower PC Case in white, showcasing its panoramic tempered glass panels and pre-installed ARGB fans.
Front I/O Panel
The front input/output (I/O) panel provides convenient access to essential ports for connecting peripherals and controlling your system.

Figure 2: Detailed view of the multi-function zone on the top front of the RUIX OV303 PC case, highlighting the Type-C, USB 3.0, USB 1.0, HD Audio, Reset, and Power buttons.
- Type-C Port: For modern high-speed device connectivity.
- USB 3.0 Port: For high-speed data transfer with compatible USB devices.
- USB 1.0 Port: Standard USB port for general peripherals.
- HD Audio Jacks: Separate ports for microphone input and headphone output.
- Reset Button: To restart the system.
- Power Button: To turn the system on or off.
Setup Guide
Unpacking the Case
Carefully remove the RUIX OV303 PC case from its packaging. Inspect the case for any signs of damage during transit. Retain the packaging for future transportation or storage.
Component Installation
The RUIX OV303 case offers a spacious interior designed for easy installation of various PC components. Refer to the diagrams below for compatible component sizes and locations.

Figure 3: Diagram illustrating component compatibility within the RUIX OV303 case, including motherboard sizes (ITX, M-ATX, ATX), GPU length, CPU cooler height, and drive bay locations.
Motherboard Installation
Install your ATX, Micro-ATX, or ITX motherboard onto the pre-installed standoffs. Secure the motherboard with the provided screws. Ensure all I/O ports align correctly with the case's rear opening.
GPU Installation
Insert your graphics card into the appropriate PCIe slot on your motherboard. The case supports GPUs up to 420mm in length. Utilize the built-in GPU support bracket to prevent sag, especially for heavier cards. Adjust the bracket to securely hold the GPU in place.
Storage Drive Installation
The case supports two 3.5-inch hard drives and one 2.5-inch hard drive. Locate the designated drive bays and secure your SSDs and HDDs using the provided mounting hardware.
Power Supply Installation
Install your ATX power supply in the bottom mount location. Secure it with screws from the rear of the case. Route power cables through the designated cutouts for efficient cable management.
Operating Instructions
Fan and Cooling Management
The RUIX OV303 comes with four pre-installed 120mm ARGB PWM fans to ensure optimal airflow and cooling performance. The case design promotes efficient heat dissipation.

Figure 4: Illustration of the three-dimensional heat dissipation design within the RUIX OV303 PC case, showing hot air exiting from the top and rear, and cold air entering from the side and bottom.
The case supports various fan and radiator configurations to suit your cooling needs:
- Total Fan Support: Up to 10 x 120mm fans.
- AIO Liquid Cooler Support: Up to 360mm AIO liquid cooler (replaces some fan positions).
- Pre-installed Fans: 4 x 120mm ARGB fans (specific locations may vary slightly, typically side and rear).

Figure 5: Close-up view of the RUIX OV303 PC case highlighting the four built-in 120mm ARGB fans, showing their placement and vibrant lighting.
ARGB Lighting Control
The pre-installed ARGB fans offer customizable lighting effects. Control of the ARGB lighting is typically managed through your motherboard's ARGB software (e.g., ASUS Aura Sync, MSI Mystic Light Sync, Gigabyte RGB Fusion) or a dedicated ARGB controller (not included unless specified). Connect the fan ARGB cables to the appropriate headers on your motherboard or controller.
Maintenance
Cleaning and Care
Regular maintenance ensures the longevity and optimal performance of your RUIX OV303 PC case.
- Dust Filters: The case features magnetic dust filters on the top and bottom. Regularly remove and clean these filters by gently brushing or rinsing them with water. Ensure they are completely dry before reattaching.
- Tempered Glass Panels: Clean the tempered glass panels with a soft, lint-free cloth and a non-abrasive glass cleaner. Avoid harsh chemicals or abrasive materials that could scratch the glass.
- Interior Cleaning: Use compressed air to remove dust from inside the case, especially from fan blades and heatsinks. Ensure the system is powered off and unplugged before cleaning.

Figure 6: Exploded view of the RUIX OV303 PC case, demonstrating its upgraded design features including high light transmittance, explosion-proof glass, and easily removable panels and dust filters for maintenance.
Troubleshooting
This section addresses common issues you might encounter with your PC case and provides potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| PC does not power on. | Power button not connected correctly; PSU switch off; PSU failure. | Check front panel power switch connection to motherboard. Ensure PSU switch is ON. Verify PSU functionality. |
| Fans are not spinning or ARGB not lighting up. | Fan/ARGB cables disconnected; Incorrect header connection; Software issue. | Ensure all fan power and ARGB cables are securely connected to the motherboard or controller. Check motherboard BIOS/software for fan speed and ARGB settings. |
| Poor airflow or high temperatures. | Dust buildup on filters/fans; Incorrect fan orientation; Insufficient fans. | Clean dust filters and fans. Verify fan orientation for optimal intake/exhaust. Consider adding more fans if temperatures remain high. |
| Front I/O ports (USB/Audio) not working. | Cables disconnected from motherboard. | Check that the USB 3.0, Type-C, and HD Audio cables from the front panel are correctly plugged into the corresponding headers on your motherboard. |
Technical Specifications
Detailed specifications for the RUIX OV303 ATX Mid-Tower PC Case.
| Feature | Specification |
|---|---|
| Model Name | OV303 |
| Case Type | Mid Tower |
| Motherboard Compatibility | ATX |
| Material | Metal, Tempered Glass |
| Color | White |
| Item Weight | 17.21 pounds |
| Product Dimensions (LxWxH) | 16.7 x 11 x 16.3 inches |
| USB 3.0 Ports | 1 |
| PSU Mounting Type | Bottom Mount |
| Cooling Support | Air, Water |
| ARGB Lighting | RGB |
| Recommended Use | Business, Gaming |
| Manufacturer | RUIX GAMING |
| First Available Date | December 8, 2024 |
Warranty and Support
Warranty Information
RUIX products are manufactured to the highest quality standards. For specific warranty terms and conditions, please refer to the warranty card included with your product or visit the official RUIX website.
Customer Support
If you encounter any issues or have questions not covered in this manual, please contact RUIX customer support. You can find contact information on the official RUIX website or through the retailer where you purchased the product.
Visit the official RUIX Store: RUIX Store on Amazon
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