VEVOR Voltage Auto Converter Transformer, 5000VA, Heavy Duty Step Up/Down Power Transformer, 110V to 220V and 220V to 110V, with 3 US Outlets, 3 EU Outlets, LCD Display, Circuit Breaker Protection
The transformer is designed with both 110V and 220V outlets for compatible plugs. Whether you need a plug adapter depends on the plug type of your device.
Yes, you are correct. This device is solely a voltage converter (transformer) designed to step up or step down voltage and does not have the capability to generate power.