Astrotek Fan Power Cable 18cm - 2x3pin Male to 3 pins Female The ASTROTEK 3-pin Y-Cable (2x Male, 1x Female), Enables Connection of x2 Fans to x1 Board 3-pin Fan Connector • Extends the length of the computer case fan cable. • Provides you with 2 fan connections by turning 1 fan connection into 2. • Better for internal and external use.