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 USB port is a long, flat rectangle with a tab the plug fits into. A USB plug will only fit into a USB port one way, and it will easily slide in. If the mouse doesn't work with either of the USB ports on the keyboard, try each port on the computer. If you have another mouse, plug it in. If that mouse works and your old one doesn't, your old mouse needed to be replaced.