The 12V single channel pwms fan controller enables precise speed for optimizeds airflows and noise reduction, ensuring energy efficient cooling in PC and electronic devices with 4pin compatibility and integrated on/off switches. Featuring toolless installation, ABS construction, and universals 4pin pwms , this module simplifies fan management while maintaining long reliability in high demands environments. for PC builders, IT professional, and enthusiasts seeking customizable thermal for gaming rigs, workstations, or home entertainment systems. Perfect for maintaining optimal temperatures in CPU cooling setups, server racks, or electronics where silents operations and space saving design. Package includes: 1PC pwms Fan Speed Controller