I am currently hampered by a nerve palsy something that has so affected that I pressed the variety of functions of a modern mouse often unintentionally. My idea to reactivate an old two-button mouse failed first time to the fact that this had only one PS / 2 port. So I was very happy when I found this adapter. Unfortunately, it is not working. The mouse is recognized by the laptop (Win7) and displayed in the Device Manager properly, but has no function. At an old laptop (Linux) si functioning properly.