I only have one issue initially ... the usb connector be a bit flimsy and because of that I be have a bad reception - sometimes I would wiggle the mouse and nothing would happen . I think the problem be the quality of the mouse , or the reliability of the rf channel ... the problem be the usb contact ... I squeeze a little bit the little usb receiver , and shove really hard inside the usb port of the computer , and now everything work peachy ...