CISCO ASR-920-PWR-A, Device Type Power supply - hot-plug / redundant - plug-in module, Input Voltage AC 85-264 V, MTBF 356,809 hours, Frequency Required 47 - 63 Hz, Input Voltage AC 85-264 V. The Cisco ASR-920-PWR-A-RF ASR 920 AC Power Supply is a Cisco power supply - hot-plug / redundant - plug-in module with AC 85-264 V Input Voltage and 47 - 63 Hz Frequency Required that is specifically designed.