The Microsoft Wired Desktop 600 Keyboard and Mouse Combo will letyou comfortably work on your system for long hours. The spill-resistantkeyboard features quiet and responsive keys. It provides instantaccess to calculator and various media controls. Four hot keys letyou control frequently-used media functions including volume up/down,pause/play and mute. With precise optical tracking, the ambidextrousmouse of the keyboard and mouse combo offers smooth movement andsuperior control. It has a sensitivity of 800 DPI and features ascroll wheel for quick navigation through web pages and documents.The USB plug-and-play connectivity of the Microsoft wired desktop600 and USB optical mouse allows for convenient and hassle-free installation.Reference