Noctua NA-FC1 PWM Fan Controller, Black

The Noctua NA-FC1 is a compact controller designed for the manual speed adjustment of 4-pin fans. By modifying the PWM duty cycle from 0 to 100%, it allows for direct control over airflow within a PC chassis. The controller can be used as a standalone manual dial or in conjunction with motherboard-based automatic controls to refine existing speed curves. By modifying the input signal, it provides more precise adjustment than standard BIOS settings. It is a practical solution for users who want to set specific fan speeds regardless of thermal load.

The device is compatible with both 12 V and 5 V fans, making it versatile across different cooling components. An integrated "no stop" mode prevents the rotational speed from falling below 300 RPM, which prevents errors in systems that cannot detect a stopped fan. It is rated for a maximum current of 3 A, allowing it to manage high-draw hardware reliably. Installation is straightforward using the included cables and power supply adaptor. Powering the unit via an external 5–12 V input ensures consistent operation for all connected fans.

• Compact dimensions of 48 x 21 x 25 mm for placement in confined spaces.
• Total unit weight of 15 g places minimal strain on internal cabling or adhesive mounts.
• Includes NA-SC1 3-way splitter cable for controlling up to three fans simultaneously.
• Includes NA-EC1 input cable for connection to motherboard fan headers.
• Included NA-AC4 power supply adaptor allows for direct connection to the system PSU.