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An adapter (or adaptor) is a device or software component that bridges the gap between two incompatible interfaces, allowing them to work together. In electronics, it can range from a simple plastic plug that changes the shape of a connector to a complex "power brick" that converts electrical voltage. Wikipedia +2Power and Charging AdaptersThese are the most common physical adapters, used to provide electricity to devices like laptops and smartphones.

• AC/DC Power Adapters: Also known as "power bricks" or "wall warts," these convert high-voltage alternating current (AC) from a wall outlet into the low-voltage direct current (DC) required by electronics.
• Plug Adapters (Travel Adapters): These are passive devices that change the physical shape of a plug to fit into foreign outlets (e.g., converting a flat-pin US plug to a round-pin EU socket).