Features: For computer fan 5V to 12Vboost cable USB to small 4pin chassis heat sink external power supply USB fan cable The use of tinned copperwire ensures excellent performances and stable signal transmission capability. USB 5V input, connected to a small 4PIN fan by rotating 12V with the lifting pressure plate, to achieve the function of USB providing sufficient power to the 12V fan If the regular USB does not pass through the boost board, it only has 5V output Quality Wire: 22AWG,USB 5V To 12V allowing pc fans to operate at full speed. Specifications: Wire Model: 22AWG Conductor Material: TinnedCopper Wire Color: Black Product Weight: 14g Product Interface: Usb A Male/Small 4pin Cable Length:approx 30cm/11.8in 50cm/19.7in 100cm/39.4in Package Includes: 1PC USB5V to 12V Cable note: Please allow 0-1cm errors due to manual measurement. Due to the difference between different monitors, the picture may not reflect the actual color of the item.