Features: Extend the 10-pin fan to a 4-pin connector to olve the problem of miing the motherboard connector, and concentrate on handling the fan' wire. The PWM interface i connected to the CPU fan interface of the motherboard, and the red interface i dedicated to the CPU fan (with peed meaurement function). The black interface i a traditional PWM fan interface (there i no peed meaurement ignal, but it doe not affect the PWM function). The power upply can be directly upplied by the power upply, which can reduce the preure load on the motherboard. The PWM temperature control line i connected eparately from the main board, and the power upply and temperature control are correct. cope of application: 3pin/4pin fan uitable for V motherboard, 3pin fan can alo be ued, but the plug-in can run at full peed, becaue 3pin fan doe not have PWM peed regulation. The back of the hub i equipped with for 3M adheive for eay ticking on a flat place. There i alo a fixed hole coil (the product come with a 40cm long PWM temperature control cable). Specifications: Type: large 4D power port, ATA power upply (optional) Line interface: mall 4Pin PWM ize: approx. 70x45x15mm / 2.76 x 1.77 x 0.59in Note: No retail package. Pleae allow 0-1cm error due to manual meaurement. pl make ure you do not mind before you bid. Due to the difference between different monitor, the picture may not reflect the actual color of the item. Thank you Package includes: 1PC x Cooling Fan Hub