The "XS Trackball Keyboard" (G84-5400) combines comfortable mouse control with compact dimensions. Via the optical trackball with two mouse keys, the cursor can be controlled easily and precisely.\n\n- Optical trackball with two mouse buttons for easy control of the cursor\n- High degree of reliability and precise keystroke feel thanks to individual keys with Gold Crosspoint contacts (Cherry ML technology)\n- Ideal for continuous usage due to the long operating life in excess of 20 million key confirmations per individual key\n- Compact dimensions and very low overall build height, ideal for restricted spaces and for 19" applications\n- Standardised measurements and installation dimensions of the complete XS product family - the keyboard can be adapted to every application\n- Lightweight - for applications where every gram counts