Microsoftreg natural ergonomic keyboard 4000 advanced ergonomic design make the move to superior comfort with this breakthrough keyboard design place your hands and arms naturally and comfortably with the microsoftreg naturalreg ergonomic keyboard 4000 the improved split design encourages a more natural hand wrist and forearm position and its new curved key layout makes keys easier to reach the zoom slider lets you zoom in for close ups of web pages images and more mdash with just