Dell Pro Wireless Keyboard and Mouse KM5221W ALL-DAY PRODUCTIVITY Enhance your all-day productivity with this RF 2.4GHz wireless full-sized keyboard and mouse. Programmable keys and scroll wheel allow you to gain quick access to your frequently used shortcuts. The native 1600 DPI mouse offers preset DPIs of up to 4000 adjustable via the Dell Peripheral Manager, offering accurate tracking across a wide range of display resolutions. WORK IN COMFORT Work with one of the quietest wireless keyboards whether on a conference call or in proximity with others. Symmetrically designed, the wireless mouse is great for both left and right-handed users. Tilt legs on the keyboard offer two adjustable angles so you can choose your preferred typing position. SUPERB RELIABILITY Built to last, this wireless keyboard and mouse combo has one of the industrys leading battery lives at up to 36 months. Dell Advanced Exchange Service offers you added peace of mind, shipping you a replacement the next business day during your 3-year Limited Hardware Warranty period. Rigorous testing allows your combo to work perfectly with your Dell systems.Please note this item is non-returnable, see our returns policy for more information.