Product Application: 1. When there is a power cut with this cable, you can connect your power bank to power up your 12V WIFI router. 2. Use this cable, you can supply your 12V car Air Purifier by power bank..       Selection Criteria: Voltage Selection

On the back of the product label, or you can see the power products, power supply input 5V, 9V and 12V standard, depending on your router to choose our pro corresponding boost cable.

(9V, 12V output boost line 0.8 ~ 1A, if you are a product you can not use more than 1A) Plug Dimensions If you are unsure, you can check with the manufacturer, or online consultation which sell equipment which businesses: Size DC power plug whether the outer diameter of the inner diameter of 5.5*, please be assured that if the choice of 2.1mm.