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.
The first and foremost tip to remember is turning the wireless devices (keyboard and mouse) off when not in use. Doing so improves battery life of a wireless keyboard to great extent. You can use the manual turn off method to switch off your mouse/keyboard when you are done for the day.