Features: USB booster input voltage is for DC 5V, output voltage is for DC 5V 9V or 12V. The converter can be used to power the router via powerbank- if power down. Plug-and-play, you can still enjoy the wifi during power cuts. it is suitable for products with power of about 6W-7W, such as routers, cameras, vehicle driving recorders, luminous LED and other products Package with 8pcs DC female to male adapters, small size and convenient to carry out. Specifications: Material: PVC+Metal Input voltage: DC5V 1A-2.1A (compatible with 5V power supply equipment) Output voltage: DC 5V/ 9V /12V Output power: about 6W-7W (output current: 7W /voltage=current) DC plug: (5.5x2.1) (5.5x2.5)) (3.5x1.35) (4.0x1.7) (6.0x4.0) ( 6.3x3.0 )(4.7x1.7)(5.5x1.7) Wire length: 1m/39.37in Round Wire Length:Approx 100cm/39.37in Note: Due to the problems of lighting effects and shooting angles, there will be certain tolerances in the product, please understand. Please allow 0-2mm error due to manual measurment. Package includes: 1 Piece USB to DC Cable