3. The COLD interface is a cooling plate interface or a load interface (this interface can output 5V 9V 12V and support the output below 3A/specifically, see the charging head load capacity). 1. This model only supports QC2.0/3.0 fast charging protocol detection board, and the input interface button of type-c female head can adjust the voltage of 5V/9V/12V. (This trigger does not support other fast charging protocols) 2. The FAN interface is a 12V fan interface (this interface has a boost function, but the charging head is 5V or 9V, which can automatically boost the voltage when used, and the 12V output supplies power to the fan, with the maximum power of 12V0.5A). 4. The decoy can meet the requirements of the modification of the cooling semiconductor refrigeration chip of the mobile phone, the 12V fan interface, the 5V 9V 12V refrigeration chip interface, and the booster interface is convenient for the modification and use of the 12V fan.