?15 pin SATA to 4 x 3 pin / 4 Pin 12V PC case fan splitter Y power adapter cable:Make the computer motherboard CPU fan powered by SATA interface.With a 15 pin male connector at one end and splits to 4 male connectors at the other end.Note: Actually only 2 pins are energized,there is no ability to throttle fan speed. ? Purpose:It can be used to solve the problem of insufficient CPU plug (3Pin/4Pin) or insufficient current of the 3Pin/4Pin interface of the main board.Saving a lot of space for your PC case to and letting you power multiple computer fans from one SATA connection(constant speed). ? Output voltage12V:With the fan adapter cable, your PC can be easily cooled with five fans at the same time and consumes only one connection to your power supply.To run 4 pcs PC case fans at 12V voltage at the same time. ? Durability Design:standard 1007 22 AWG (tinned copper).Built with High density PVC shell and Sleeved in black nylon braided cable.This Fan Splitter Power Adapter Cable can withstand bend test of many times without reducing cable flexibility and ensure the best performance. ? Input & Output Interface :Input: 15-Pin male SATA connector (Typically Used In PCs For HDD and SSD Power);Output: four 3/4-Pin male fan connectors (specialized fan connector is compatible with both 3-Pin and 4-pin fans).