The Logitech LX7 Cordless Optical Mouse is a great mouse! I love that it is an optical mouse because there is no need to take it apart to clean the ball or the track part for the ball. The Logitech LX7 Cordless Optical Mouse is cordless, but it comes with a long USB cord. When I had a desktop I used this cord, and the little USB part of the mouse plugs into this cord. I kept this sitting on my desk near my keyboard. Now that I have a laptop I never use the long USB cord, I just use the USB like you would for any other wireless mouse for a laptop. I love the buttons on the top (used for going forward or back on a website). I use these buttons all the time! They are very handy, but took me a while to get used to at first. The mouse has a great battery life, I never turn my mouse off and I use the cheapest batteries you can get. The mouse lasts me months at a time. The low battery light will come on (flashes red to warn you batteries are getting low) but the mouse still works perfectly. I have used the mouse with the low battery light on for close to two months before. The Logitech LX7 Cordless Optical Mouse is a great mouse that I would recommend to anyone who is looking for quality, but not looking to spend too much money.