Kiosk designed Stainless Steel Keyboard with Trackball Features and benefits: --The web-layout version with 38 mm stainless steel trackball --Robust and durable --Silicone switching elements --PS/ 2 and USB compatible --Panel-mount version with mounting studs on rear-side --Laser engraved key legends for excellent durability --Non removable keycaps --High operating comfort and good tactile feedback --IP65 ( NEMA 4x) sealing, water and dust proof --more than 10 million operations per key --Activation force 1 N / key travel 1.5 mm --Semi or full customization available --Kiosk designed web- and e-mail-hot keys