An adapter is a versatile accessory that allows compatibility between devices with different power or connection requirements. Power adapters are the most common, converting AC power from wall outlets into DC power for devices like laptops and phones. Other adapters include USB to HDMI, Ethernet to USB, and audio adapters, enabling communication between devices that have varying input/output ports.

Adapters are indispensable for expanding connectivity, especially when dealing with different standards across devices. For instance, international travel adapters enable users to plug devices into foreign outlets, while power adapters for laptops ensure safe charging. High-quality adapters maintain data integrity and energy efficiency, preventing damage to connected devices. Whether for charging, data transfer, or audiovisual setup, adapters ensure seamless interaction between diverse devices.