1. USB Easy Laser printed Ergonomic connection setup keycaps esign Key number 107 108 keys Power sleep wake up Stylish and contoured design Laser printing kKeycaps for longer wear slim design Maximum rating 5 0VDC 10 200mA maximum Contact resistance 50 00hm maximum Insulation resistance DC100V 50M Ohm minimum Directivity Omnidirectional Operation voltage 0 4mV Operating temperature 0 C 50 C Storage temperature 20 C 60 C Humidity 80 RH 95 RH