Features: Brand new and high quality USB interface to chassis fan 4-pin wire, cable length approximately 30cm / 11.8in, all copper core wire, durable Connector type: one end is a USB interface, the other end is a 2-wire 4-pin chassis fan connector Use this cable to power a chassis fan from a computer's USB port Suitable for DIY modifications of case fans or notebook cooling pad fans The chassis fan must support 5V low-voltage operation, meaning it can run on USB 5V power; otherwise, the fan will not operate even if the cable is functioning properly Specifications: Product Name: USB to 4-Pin Cable Cable Length: approximately 30cm / 11.8in Wire Type: 2464 22AWG Insulation Material: PVC Conductor Specification: 17x 0.15TS Conductor Material: Pure Copper Wire Outer Diameter: 3.5mm Rated Temperature: 80°C Wire Color: Black Product Weight: 10 grams Interfaces: One end with 4-pin fan connector, other end with USB interface Function: Enables powering a chassis fan via USB port Note: Fan speed may be reduced by up to 60% when using this USB adapter cable; it is recommended to use a higher-speed fan for optimal performance Due to lighting and display differences, actual product color may vary slightly from images Allow 0-2cm variation due to manual measurement Package Includes: 1 x USB to 4-Pin Fan Cable