1. Introduction
This manual provides comprehensive instructions for the installation, operation, and maintenance of your darkFlash DM8 3-Pack Reverse Blade RGB PWM Fans. These fans are designed to provide efficient cooling and customizable lighting for computer cases.
The DM8 fans feature a reverse blade design, dual-ring RGB lighting with an infinity mirror effect, and PWM control for optimized performance and acoustics.
2. Package Contents
Verify that all components are present in the package:
- 3 x darkFlash DM8 Reverse Blade RGB PWM Fans
- Mounting Screws
- 4-Pin PWM Cable (for fan speed control)
- 3-Pin 5V ARGB Cable (for lighting control)
- User Manual (this document)

Image: Three darkFlash DM8 Reverse Blade RGB PWM Fans, showcasing their design and RGB lighting capabilities.
3. Specifications
| Feature | Specification |
|---|---|
| Model Number | DM8 3IN1 |
| Fan Size | 120mm x 120mm x 28mm |
| Fan Speed | Up to 1600 RPM |
| Airflow | 56 CFM |
| Noise Level | 32.5 dBA (maximum) |
| Power Connector | 4-Pin PWM |
| RGB Connector | 3-Pin 5V ARGB |
| Voltage | 5 Volts |
| Wattage | 1.8 watts |
| Bearing Type | Hydro Bearing |
| Material | Rubber (for shock absorption) |

Image: Diagram illustrating the key specifications of the DM8R 120mm ARGB PWM fan, including fan speed, noise level, airflow, and fan pressure.

Image: Wiring diagram showing the 4-Pin PWM cable and 3-Pin 5V ARGB cable for the darkFlash DM8 fans, along with fan dimensions.
4. Safety Information
- Ensure your computer system is powered off and unplugged from the wall outlet before installation.
- Handle fans by the frame to avoid touching the blades.
- Do not attempt to modify the fan or its cables.
- Keep out of reach of children.
- Use only the provided mounting hardware.
5. Installation Guide
Follow these steps to install your darkFlash DM8 fans:
- Prepare Your System: Power off your computer and unplug it from the power source. Open your computer case to access the fan mounting locations.
- Identify Mounting Locations: Determine where you want to install the fans (e.g., front, top, rear, bottom). The DM8 fans are reverse blade, meaning they pull air in from the side that displays the infinity mirror effect. Consider your desired airflow direction.
- Mount the Fans:
- Position each fan in the desired location.
- Secure the fans using the provided mounting screws. Ensure they are tightened firmly but do not overtighten.
- Connect PWM Cables: Connect the 4-Pin PWM cable from each fan to an available 4-Pin fan header on your motherboard or a fan controller. Daisy-chaining multiple fans to a single header is possible if supported by your motherboard/controller.
- Connect ARGB Cables: Connect the 3-Pin 5V ARGB cable from each fan to an available 3-Pin 5V ARGB header on your motherboard or an ARGB controller. Ensure you connect to a 5V ARGB header, not a 12V RGB header, to prevent damage.
- Cable Management: Route cables neatly to ensure proper airflow and a clean build.
- Close Case and Power On: Once all connections are secure, close your computer case, plug it back in, and power it on.
Video: An official darkFlash video demonstrating the aesthetic features and lighting effects of the DM8 fans. This video highlights the dual ring RGB and infinity mirror design.

Image: A computer case with darkFlash DM8 fans installed, illustrating the visual impact of the RGB lighting and infinity mirror effect.

Image: A close-up view of a darkFlash DM8 fan, highlighting the dual ring RGB and infinity mirror design elements.
6. Operating Instructions
6.1 Fan Speed Control (PWM)
The DM8 fans utilize Pulse Width Modulation (PWM) for precise speed control. Fan speed can be managed through your motherboard's BIOS/UEFI settings or dedicated fan control software provided by your motherboard manufacturer. Adjust fan curves to balance cooling performance and noise levels according to your system's needs.
6.2 RGB Lighting Control (ARGB)
The Addressable RGB (ARGB) lighting of the DM8 fans can be controlled via your motherboard's ARGB software (e.g., ASUS Aura Sync, MSI Mystic Light Sync, GIGABYTE RGB Fusion, ASRock Polychrome RGB) or a compatible external ARGB controller. This allows for synchronization of lighting effects across your system components.

Image: An image displaying the darkFlash DM8 fans alongside logos of compatible ARGB synchronization software, including ASUS Aura Sync, MSI Mystic Light Sync, GIGABYTE RGB Fusion, and ASRock Polychrome RGB.
7. Maintenance
Regular maintenance ensures optimal performance and longevity of your fans:
- Cleaning: Periodically clean the fan blades and frame to remove dust buildup. Use compressed air or a soft brush. Ensure the system is powered off and unplugged before cleaning.
- Inspection: Check cables for any signs of wear or damage. Ensure all connections remain secure.
- Avoid Obstructions: Ensure no cables or other components obstruct the fan blades, which can lead to increased noise or reduced performance.
8. Troubleshooting
8.1 Fans Not Spinning
- Check if the 4-Pin PWM cable is securely connected to the motherboard or fan controller.
- Verify that the fan header on the motherboard is enabled in BIOS/UEFI settings.
- Ensure the power supply is functioning correctly.
- Test the fan on a different fan header or with a known working fan controller.
8.2 RGB Lighting Not Working or Incorrect
- Confirm the 3-Pin 5V ARGB cable is correctly connected to a 5V ARGB header on your motherboard or controller. Do not connect to a 12V RGB header.
- Ensure your motherboard's ARGB software is installed and updated.
- Check for any loose connections in the ARGB daisy chain (if applicable).
- Restart your computer and check if the lighting initializes correctly.
8.3 Excessive Noise
- Check for any obstructions (cables, debris) hitting the fan blades.
- Ensure mounting screws are tightened properly. Loose screws can cause vibrations.
- Adjust fan speed settings in your motherboard's BIOS/UEFI or software to a lower RPM.
- Clean any dust buildup on the fan blades.
9. Warranty and Support
darkFlash provides a 1-year assurance for this PC case fan. For technical support, warranty claims, or further assistance, please contact darkFlash customer service through their official website or the retailer where the product was purchased. Please retain your proof of purchase for warranty validation.
Official darkFlash Website: www.darkflash.com





