Final answer:
A docking station is the device designed to easily connect a portable computer to peripheral devices such as keyboards, mice, and printers through one single connection point.
Step-by-step explanation:
A device designed to connect a portable computer to peripheral devices more easily is a docking station. A docking station allows a laptop or a portable computer to connect to multiple peripherals through a single connection point, making it simpler to attach and detach the computer from the connected devices.
It can provide connectivity to keyboards, mice, monitors, printers, and often also provides additional ports and sometimes charging capabilities. On the other hand, a USB hub simply expands the number of USB ports available, an Ethernet cable provides network connectivity, and a wireless adapter allows for wireless network connections.