Northern Ireland is the smallest of the four countries of the United Kingdom in terms of both area and population, containing 2.9% of the total population and 5.7% of the total area of the United Kingdom.
All Microsoft mouse wireless USB devices include a USB connector called a receiver. If your wireless mouse did not include the receiver, the most likely reason is that the mouse is a Bluetooth device. Therefore, some steps in this article may not apply. Try to connect the receiver to a different port.
A 3G USB model allows you to use your computer (via USB port) to connect to the cellular network to get data. A Wi-Fi router simply refers to any router (for all intents and purposes, a device that lets you share an Internet connection) wirelessly using Wi-Fi. The Wi-Fi router must first itself be connected to the Internet.