A power supply for electronic devices. Also called an "AC adapter" or "charger," power adapters plug into a wall outlet and convert AC to a single DC voltage. Computers use multiple DC voltages ...

A device that transfers power to smartphones, tablets and myriad portable devices. USB chargers plug into an AC outlet and provide a USB Type A or Type C socket to cable DC power to the device.

Having USB wall outlets around can cut out the middleman, so to speak; it reduces the need for adapters, allowing you to plug your device directly into the wall whenever you need to (even if they ...