35 cm long DC5V fan speed controller cable with 5.5x2.1mm male-to-female connectors. It supports up to 5V and provides a built-in switch with three speed settings (low, medium, high) to adjust airflow without needing a voltage amplifier. Benefits at a glance - Easy temperature control: quick adjustment of airflow to match cooling needs. - Simple, reliable operation: three fixed speed settings via switch for predictable results. - No amplifier required: directly drives 5V devices from a standard supply. - Broad compatibility: designed for 5V devices such as laptop fans, LED lights, or other 5V equipment. - Ideal for hobbyists and enthusiasts: handy for customizing cooling in small or DIY projects. Key specifications - Length: 35 cm - Voltage: up to 5V - Connector: 5.5x2.1mm male to female - Speed options: low, medium, high - Function: built-in switch for immediate control - Applications: 5V fans, LEDs, and other 5V devices Use scenarios - Laptop or portable device cooling during heavy use to manage heat without extra hardware. - DIY PC or small enclosure where a controllable 5V fan is desirable. - 5V lighting or electronics projects that require adjustable airflow or cooling.