Standard, simple and always popular Low noise, silent tactile key switches for quiet and easy typing Supporting multiple languages PS2/USB/AT Interface, Plug and play Switch type: rubber + membrane Layout: 104/105/106/107/109Key Compatible with all Windows operating systems Input power - 5V +/- 5% 20mA. Working life: 10 million times FCC and CE compliant. Welcome to browse our website: , any queries, please contact us via mary at