... Standard Language VariantsEnglish (US), English (UK), French, German, Spanish, Italian, Turkish, Arabic, Thai, Japanese. Popular Stainless Steel Keyboard ... key switch USB or PS/2 keyboard and trackball connection Keyboard without track-ball Compact versions available: ... 1.3-1.5 mm Host InterfacesUSB interface; Keyboard and trackball/touchpad independently connected where fitted EnvironmentalOperating ...