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.
If you are using a wireless mouse with a USB connector and a PS/2 keyboard, verify that the USB mouse is plugged in a USB port on the computer and that the purple keyboard PS/2 plug is connected to the purple PS/2 port on the computer.
Wireless USB, however, opens up a variety of new types of devices. Wireless USB hubs, or bridging devices, will allow you to plug wired USB peripherals into the hub, but the hub itself will enjoy a wireless connection to the computer. In this way, you can experience the convenience of wireless connectivity without replacing all your USB peripherals with wireless versions.