Ergonomically designed computer keyboard Life cycle: 10,000,000 stroke Multiple language versions available 107 keys ,With 10 keys layout High quality membrane key switch Electronically data input power: +5V DC ?0% low power consumption Connector PS/2, USB Supports:: Windows 98 / 2000 / XP / Me . Kbsize: 433*175*24 (mm) white box: 450*170*35(mm) 20PCS/CTN. CartonSize: 450*350*340(mm)