Sometimes switching to a new keyboard and mouse can feel weird especially if you have been using the same keyboard and mouse for years like me. I have been using the same keyboard and mouse for over 3 years. Luckily, my computer also have PS/2 ports for my computer mouse and keyboards, but if your computer or laptop does not have PS/2 ports on the back you need a Adesso PS/2 to USB Adapter if your old keyboard and mouse still uses PS/2 plugs which are usually round, and colored purple for the keyboard, and green for the mouse.