Perixx 10532 PERIBOARD-706PLUS Wireless Keyboard With Trackball, 2.4G, 14mm, 12.40"x5.79"x1.02" Dimension Built-in 0.55" optical trackball with control of mouse function. Fit with kiosk, 19" Rack, professional and various industrial applications. With wireless 2.4 G technology Plug and Play with Nano receiver. Built-in storage compartment and on/off power switch Built-in 12 multimedia hot keys, handy access to multimedia, easily switching among different working scenarios Logitech Microsoft adesso cherry razer 19" rack