Not enough fan sockets on main board? No problem! Get this 3-pin female to 3-pin dual extension cable and you can connect your 3-pin fan directly to your PSU. It won't occupy your 3-pin plug its Y cable design give you another 3-pin plug to connect other device. This adapter cable is compatible with all 3-pin fans and even 4-pin PWM fans. In case to connect?4-pin PWM fan you just need to leave the blue color PWM signal cable aside and your fan will still work fine with full speed. With this adapter cable?you can bring as many fans into your PC case as you like. - Compatible with 3pin/4pin conductors - Cable length: 30cm