Dc to Dc 9v USB Booster Cable 5.5*2.1mm

9v usb barrel jack cable step-up converter application: 1. with this cable, you can power your router with your power bank. thus, when power cut, you can use your power bank to supply your router. 2. use this cable, you can supply your car air purifier led strip light by power bank 3. for other 12v device (power less than 6w 600ma) specifications: input voltage: dc 9v output voltage: dc 12v (optional) max input current: 2a max output power: 6w max output current: 600ma (for 600ma or less application is recommended) cable length: approx. 1m/3.28ft color: black input interface: usb a type male output interface: 2.1x5.5mm plug (inside the positive side outside the negative) note: ! 4.no retail package package includes: 1 x 9v usb barrel jack cable step-up converter