Summary: I must agree with the remarks made by Murcie. My mouse "appeared" to work well for a few months then zip. The cursor became erratic, deciding to stop suddenly while moving. I had to wait a few moments for the Windows sound indicating that it had "connected" and it would then work fine ...... for another few minutes. In my many years I have learned a few "naughty" words [Oh alright then a LOT of naughty words] but seldom had recourse to many of them.