Type C male input, solderless 2pin output, approx 30 cm long, supports up to 3 A. Applications: suitable for routers, surveillance cameras, loudspeakers, ceiling fans, exhaust fans, cooling fans, car fans, blowers, toys, car electronic devices, instruments and meters, LED lights, displays, and printers. Voltage options: 9V, 12V, and 20V fixedoutput versions, weldingless design for convenient wiring. Compatibility note: If you use the 12V version, the Type C adaptor must provide 12V output. If you choose the 9V or 20V version, the Type C adaptor must also provide 9V or 20V output respectively. Typical use scenarios: Power a home router or surveillance camera with a fixed voltage to improve stability and reduce power noise. Supply a steady 9V/12V/20V to LED lights, displays, or printers that require a fixed voltage. Drive small fans or car electronics at a fixed voltage for reliable operation.