Power parameters and other instructions Universal power adapter, switching power supply transformer The power supply for voltage requirements for the 23.8v-24.2v range, the current demand for equipment within 3a or 3a DC power applied to the electrical needs 24v3a development board, removable hard disk, etc. The power supply voltage is suitable for all kinds of needs 24v 3A or 3A below current DC input products, can not overload to use! Power selective attention, you need to follow to select the voltage consistent electrical current is equal to or higher than the required current power supply Input voltage (INPUT): 100-240V 50-60Hz The output voltage (OUTPUT): DC24V-3A Power (MAX OUTPUT POWER): 72W Overall: If the following pictures are all physical map length 1.2 m Polarity:Internal positive, external negative DCPlug: 5.5 * 2.5mm