Eheim Splitty9 Active20191PCDisc Discs – The Ultimate PWM Fan Distribution Solution
The Eheim Splitty9 Active20191PCDisc Discs is a high‑performance, active fan splitter designed to distribute a single 4‑pin PWM signal to up to nine fans simultaneously. Built for reliability and precision, this component is essential for anyone looking to create a balanced cooling system in custom PC builds, server racks, or any application that requires synchronized fan control.
Key Features
- Active Signal Distribution: Unlike passive splitters, the Splitty9 actively regenerates the PWM signal, ensuring each connected fan receives a clean and stable drive regardless of load variations.
- Up to 9 Fans: Supports a maximum of nine fans on a single header, expanding cooling capacity without additional motherboard headers.
- 4‑Pin Compatibility: Fully compatible with standard 4‑pin PWM fan connectors used in modern motherboards and power supplies.
- Compact Design: Slim profile fits easily into tight spaces such as mid‑tower cases or server chassis, minimizing cable clutter.
- Durable Construction: Made from high‑quality plastic housing with reinforced internal contacts to withstand continuous operation.
- Intuitive Wiring: Straightforward pin layout: one input (pin 1) and nine outputs (pins 2–10), making installation a matter of a few minutes.
Technical Specifications
| Parameter | Specification |
| Input/Output Type | 4‑Pin PWM (12V + 0–10V PWM) |
| Maximum Fan Count | 9 |
| Signal Regeneration | Active |
| Operating Voltage | 12 V DC |
| Power Consumption | Minimal (≈0.5 W) |
| Dimensions | Approx. 30 mm × 15 mm × 10 mm |
| Weight | ~20 g |
| Material | High‑grade ABS plastic with metal contacts |
| Temperature Range | -40 °C to +85 °C |
Installation Guide
- Prepare the Fans: Ensure all fans are 4‑pin PWM and have matching connectors.
- Connect the Input: Plug the single input connector into a motherboard or controller header that supplies PWM control.
- Distribute the Outputs: Connect each fan to one of the nine output pins. The order does not affect performance, but labeling can help maintain organization.
- Secure Connections: Tighten all connectors firmly; loose contacts may cause signal degradation.
- Verify Operation: Power on the system and use BIOS or software fan control to confirm that all fans spin at the same speed and respond to PWM changes.
Performance Benefits
- Consistent Speed Across Fans: The active regeneration guarantees identical RPMs, preventing uneven cooling and potential hotspots.
- Reduced Power Draw: By sharing a single PWM source, the overall power consumption of the fan array is minimized compared to individual controllers.
- Enhanced Reliability: With fewer cables and connectors, the risk of mechanical failure decreases, leading to longer system uptime.
Use Cases
- Custom Gaming PCs: Expand cooling for high‑end GPUs or overclocked CPUs without needing extra motherboard headers.
- Server Environments: Maintain uniform fan speeds across multiple chassis, ensuring consistent thermal performance.
- DIY Cooling Projects: Ideal for building custom radiators or liquid cooling loops where synchronized fan control is critical.
Compatibility Notes
The Splitty9 Active20191PCDisc Discs works seamlessly with any motherboard or controller that provides a standard 4‑pin PWM output. It is also fully compatible with aftermarket fan controllers, ensuring flexibility across different build configurations.
Maintenance Tips
- Regular Inspection: Check connectors for dust buildup; clean gently with compressed air if necessary.
- Avoid Overloading: Do not exceed the maximum of nine fans to prevent signal degradation.
- Temperature Monitoring: Keep an eye on ambient temperatures; although the device operates up to 85 °C, prolonged exposure to extreme heat may affect longevity.
Conclusion
The Eheim Splitty9 Active20191PCDisc Discs delivers a reliable, high‑quality solution for distributing PWM fan signals across multiple units. Its active design ensures consistent performance, while its compact form factor and straightforward installation make it an indispensable component for any advanced cooling setup.