Features: 30W Multifunctional adapter with USB port, 3-12V variable voltage, easy to choose, you can easily switching to different voltages. DC5.5mm×2.1mm direct current power cable connector, easy to connect and convenient to use. Comes with 8 adapters, 5.5x2.5, 5.5x2.1, 4.0x1.7, 3.5x1.35, 3.0x1.1, 2.5x0.7, Micro USB, LED dedicated port. Built-in six protections functions: over-current, over-load, high voltage, high temperature, short circuit, and undervoltage, it will not cause damage to external equipment and is safe and reliable. Suitable for 3V to 12V household electronic product, tablets, scales, routers, speakers, LED light strips, CCTV camera system, USB charging cameras, etc. Specifications: Material: ABS Plug Type: 3 kinds of standard plug types optional, refer to pictures to select please Cable Length: Approx. 120cm/3.9ft Alternating Current input: AC100-240V, 50/60Hz Direct Current output: DC3V-12V, USB 5V 2.1A Adapter interface: 5.5x2.1 Connectors: 5.5x2.5mm, 5.5x2.1mm, 4.0x1.7mm, 3.5x1.35mm, 3.0x1.1mm, 2.5x0.7mm, Micro USB, and LED Terminal Connector Package Includes: 1x 30W Multifunctional Adjustable Power Adapter 8x Connectors 1x Small Key Tool note: Please allow 1-2cm errors due to manual measurement. Please allow for slight color differences due to different display resolution.