The strong and silent type. With internal components sealed inside a single-piece, 100 percent silicone, latex-free case to prevent intrusion from debris, moisture and most acidic and alkaline substances, the MANHATTAN Roll-Up Keyboard can resist damage from accidental spills and drops and most harsh working conditions. Easily hand-washed with gentle cleansers and constructed without screws or sharp edges, it provides reliable operation in health, food and beverage service, industrial, laboratory and other environments where traditional keyboards can likely fail or compromise hygiene and safety. Soft-touch keys and a familiar full-sized configuration with built-in numeric keypad plus Sleep, Wake and Power keys provide silent but confident tactile response for assured data entry. White-on-black characters help improve legibility in dimly lit settings. Installation is quick with Windows XP/Vista/7 compatibility, Plug and Play capability and USB connectivity (also works with MANHATTAN USB to PS/2 Adapter, model 333962). The low-profile, lightweight MANHATTAN Roll-Up Keyboard is ideal for reducing repetitive strain injury risk and easily stores for travel.