A920-PWR400-A is a Cisco ASR 920U 400W AC PSU
Cisco® ASR 900U Series Aggregation Services Routers are full-featured, modular aggregation platforms. They’re designed for the high-performance, highly reliable delivery of converged industrial Internet of Things (IoT) operational and data services. You get redundancy, a shallow depth, low power consumption, and high service scale in routers packed with useful features and optimized for small aggregation and remote Point-Of-Presence (POP) applications.
