CHERRY ML 4420 Ultraslim Keyboard w/ Optical Trackball - Cable Connectivity - PS/2 Interface - 83 Key - Trackball - Built-in Mouse - Light Gray - No Logo

High level of reliability and unique precision confirmation feeling 83/84 keyboard layout with all the functions of a standard keyboard Ideal for limited space and 19in applications Can be used with the standard drivers of the operating system Integrated optical trackball plus 2 mouse buttons Individual keys with Gold Crosspoint contacts (ML technology) Designed for continuous usage - over 20 mill. confirmations per key Lightweight Extremely flat - total height just 20 mm