Both spellings are used, and they generally mean the same thing.

• Adapter is the more common spelling in American English.
• Adaptor is an accepted variant, often seen in British English and on some packaging.

Whether you see “adapter” or “adaptor,” it can refer to items like wall chargers, plug adapters for travel, USB-C adapters, and outlet extenders. If you’re browsing or searching, using either term can help surface relevant options. Product details, specs, and compatibility information are more important than spelling, so it’s a good idea to check the ports, power ratings, and features that match your needs.

Adapters are accessories that help your devices connect or get power when ports or plugs don’t match.

• Power adapters/chargers: Convert wall AC power to the DC power devices use (commonly via USB-A or USB-C).
• Plug adapters: Change the physical plug shape for travel (they typically don’t convert voltage).
• Port adapters: Bridge ports, like USB-C to USB-A.
• Outlet extenders: Add more AC sockets and sometimes USB ports.

When choosing, consider the device’s required volts/amps or watts, the connector type, and any features you want (like fast charging or surge protection). Checking these details can help you find a safe, compatible match.

In tech, an adapter is a device that changes how something connects or is powered so different standards can work together.

• Interface adapters: Convert one port to another (for example, USB-C to USB-A) without changing the data itself.
• Power adapters: Provide regulated DC power from an AC outlet for phones, tablets, or laptops.
• Plug adapters: Adjust the shape of the plug for different regions, but typically not the voltage.

Adapters are different from dedicated converters/transformers that change voltage. Many everyday “adapters” are actually chargers that include the necessary power conversion for your device. Always review specs to confirm the function you need.

Charging adapters (often called power adapters or wall chargers) provide regulated power to your devices from an AC outlet.

• USB-A/USB-C outputs: Deliver power at set voltages; USB-C with Power Delivery can negotiate higher wattage when supported.
• Fast-charge standards: Some ports support protocols that can speed up charging when the device and cable also support them.
• Multi-port models: Convenient for charging several devices; available power may be shared across ports.

For best results, match the adapter’s wattage to your device’s needs and use an appropriate, certified cable. Avoid covering the charger during use and follow the product’s instructions. Actual charging speed can vary by device, cable, and settings.

A quick checklist can help you pick a safe, compatible option:

1. Match the connection: Confirm the port you need (USB-C, USB-A, or a specific device plug).
2. Check power needs: Look for the device’s volts/amps or recommended watts; higher-watt chargers are often fine, as the device draws what it needs.
3. Count ports: Single-port for simplicity; multi-port if you charge several devices (power may be shared).
4. Travel fit: Choose the correct plug type; most plug adapters don’t convert voltage.
5. Safety and certifications: Consider listings like UL/ETL and follow usage guidelines.

These points can narrow options and support reliable performance, but results vary by device and cable.