In an Extended Enterprise solution, the types of devices that can be connected typically include those that extend the functionality of the enterprise beyond its traditional boundaries. Smart meters and actuators are examples of such devices. Smart meters provide critical data for utility management and optimization, while actuators play a key role in automating processes and systems, both crucial for expanding the enterprise's operational capabilities into more distributed and dynamic environments.

References:The answer reflects an understanding of extended enterprise architectures, where the integration of various IoT devices like smart meters and actuators supports extended operational efficiency and data-driven management.