I have owned two of these now. Each works fine for about a month and then something happens with the usb receiver that causes it not to work properly. Its like something happens that makes it unable to connect after youve taken it in and out of a usb slot for a month. Then what happens is you have to constantly jiggle the receiver to get it to connect properly. After a while its not worth the trouble. So if you dont mind investing $30 every 2 months for this mouse, then go ahead and purchase.. I dont know if other mice are the same way, but I will consider a return to mice with wires if they are.