By news@appleinsider.com (Amber Neely) If you’re worried about repetitive stress injuries while working, the Kensington TB550 Pro Fit Ergo Trackball mouse provides an ergonomic solution at a budget-friendly price.Kensington TB550 Pro Fit Ergo TrackballIt’s not exactly breaking news that using a mouse for extended periods can lead to all sorts of wrist problems, including repetitive stress injuries and carpal tunnel. …

Source:: Apple Insider