The StarTech FAN4SPLIT12 is a 12-inch passive fan power splitter cable designed to distribute power from a single 4-pin PWM fan connector to multiple fans simultaneously. The cable features a male 4-pin Molex connector input and female 4-pin outputs, enabling connection of up to four fans from one motherboard or controller header. The 12-inch length provides flexible routing within standard server and workstation chassis. This splitter maintains full PWM control signal integrity, allowing connected fans to respond to temperature-based speed adjustments from the host system. Typical applications include expanding fan capacity in small form factor systems, adding redundant cooling to critical components, or retrofitting legacy chassis with additional airflow without requiring additional headers. Compatible with all standard 4-pin PWM fans and motherboards supporting PWM fan headers. Tested and guaranteed—available via quote.