What type of device can be charged using USB outlets in the flight deck?

The correct answer indicates that only the Electronic Flight Bag (EFB) can be charged using USB outlets in the flight deck. This specificity arises from the fact that USB outlets on aircraft are typically designed to provide power to devices that are crucial for flight operations, such as EFBs, which serve as essential tools for pilots to access charts, flight data, and other pertinent information during a flight.

EFBs are highly integrated into aviation operations, often requiring specific power standards and capabilities to function effectively during flight. In contrast, while other devices, such as mobile phones and laptops, may be able to be charged via USB in different environments, the flight deck's USB outlets are generally dedicated to supporting the operation of EFBs, ensuring that pilots have reliable access to vital flight information. Therefore, selecting EFB as the answer reflects an understanding of the specialized needs and limitations associated with charging devices in the aviation context.