1. The cable can add up to 4 fans, two fans for 12V DC and one for 5V DC. 2. Allows you to connect four 4-pin (TX3) fans to a single 4-pin Molex LP4 power supply connector. The fan run on Molex's fixed voltage of 12V (only a 2-pin connector is required). The cable is compatible with standard 3-pin fans. 3. Use the 4-pin Molex connector to power four 3-pin or 4-pin (PWM connector) PC case fans. It suitable for CPU PC case fan, the fan speed be slow if connect on 5v, or be higher on 12v plug. 4. Because it is only for power supply, each small 4P plastic shell is only connected to 2 wires, no speed measurement function, no temperature control function. 5. Instructions for use: Two channels of 12V power supply, the 12V fan runs at full speed (12V is yellow and black wire) two channels of 5V power supply, the 12V fan uses 5V to reduce the speed and reduce wind noise! (5V is red and black wire). Product name: Computer fan adapter cable Voltage: 2x12V, 2x5V Wire Gauge: Tinned copper - 1007 24AWG Wire Connector A: 1 - Molex 4 pin LP4 Male Connector B: 2 - TX3 3-pin Female (2 wires only, missing the pin of tach) Interface: power supply 4Pin to 3Pin interface one point four channels (2 12V 2 5V) Function: Solve the problem that the 3Pin interface is not enough, use a different interface to adjust the fan speed. Model Number: fan Power cable color:Photo color Material:PVC+24AWG tinned copper wire size:Length about 10cm Package Contents: 1 x 4-Pin Molex to 3-Pin fan Power cable Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.