The ACK-595 is especially designed for Windows. It has 88/89 keys with embedded numeric keypad and 12 dedicated function keys. Its your everyday keyboard comfortable sleek and easy to use. The Mini Keyboard ACK-595 brings outstanding value with a captivating combination of performance comfort and stability.Compatibility: IBM AT PS/2 or USB.Key layout: 88/89 keys.Travel distance: 3.0 0.3 mm.Travel to peak: 1.0 0.2 mm.Peak force: 50 10 gm.Operating temperature: 0 to 55oC.Storage temperature: -20 to 65oC.Operating humidity: 10% to 95% RH.Switch life: 5 million life cycles.Electronic data: +5VDC 5% 250mA.Dimension: 11.2'' L x 5.5'' W x 1.1'' H.Designed for Windows.88/89 keys keyboard with embedded numeric keypad and 12 dedicated function keys.Fully function of 104/105 keys.