DC power plug size: diameter: 5.5mm, inner diameter: 2.1mm Total length: about 1M Package Included: 1pcs x power cable
Difference between the three lines: 5V straight through: pure power cord, USB input is 5V, power DC plug output is 5V 9V boost line: With the boost components, the input voltage of 5V via USB components, the boost to 9V voltage 0.8 ~ 1A 12V-through: with boosting components, the input voltage of 5V via USB components, boosted to 12V Voltage 0.8 ~ 1A
