... º C: 10 days, IEC 60512-6 Mechanical Data - Actuation force for key:120+/-15g- Key travel: 2.0mm - Lifetime (cycles): Min ... axis 150 m/s² - 11 ms, IEC 60512-4 Operation system - PS2: Win NT4, 98SE, 98ME, 2000, XP - USB: Win 98SE ... .10 mm More Photos Certifications Industrial metal keyboard with touch pad,function keys and number keypad