Wired keyboard with a 104-key layout features a removable silicone cover that can be quickly wiped down to help you maintain sanitary work conditions. Whisper key technology minimizes the noise created from typing for distraction-free use in any environment. Plug-and-play USB 2.0 connection allows immediate use without any software to install. Four hot keys provide instant access to your calculator, e-mail, browser and sleep mode. Slim keyboard is designed to provide continuous usage for more than 10 million keystrokes. Full-size keyboard is perfect for operating rooms, diagnostic equipment, nursing stations, doctor's offices, foodservice industries and more.