Summary: I was surprised by this wireless mouse. I have never used Logitech electronics but assumed, because the price was low that it would work for a couple of months and then quit or start to lag. I previously bought another wireless mouse that started to lag even after changing the batteries. Thankfully this what not the case with this mouse! I would get another one in a heart beat!
Summary: I needed a replacement mouse, and this wireless fit the bill. Simply turn off the computer, unhook your old mouse, plug in the small WI-FI plug into a USB slot on your computer. Put the battery in the mouse, turn on the computer and use! That simple. Works great.