Sold as a 2-piece set, this adapter cable is capable of connecting 3-pin and 4-pin PC fans to the mini 2-pin JST XH 2.5/2.54mm connector, which is widely used in power supplies, networking equipment and other electronic products. The connectors are designed with a standard 2-pin female connector, with red for positive voltage and black for ground, matching the most common wiring configurations. Please note that due to a lack of standardisation, some users may need to swap pins to achieve correct functionality. These cables conform to specifications and feature high-density PET sleeving for durability and a clean look, with an overall cable length of 4.0 inches (10 cm), providing a flexible solution for device connectivity.