... reliable and cost-effective replacement for all models (with or without encryption) of the IBM4777 Magnetic ... LKE4777 SpecificationsWorking environment045, humidity 20%90RH, no condensationPowerDC5V, 300mACubage215mm×64mm×65mmWeight700gInterface PS/2 or ... timesLKE4778 SpecificationsWorking environment045, humidity 20%90RH, no condensationPowerDC5V, 300mACubage148mm×108mm×85mmWeight300gInterface PS/2 or ...