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.
The ASR 902U Router uses the same design as the ASR 903U Router, but due to its smaller size, it has four interface module cards and one RSP card. The ASR 920U Router is designed to contain embedded RSP, one fan tray, two power supplies, and one interface module card. All components support online replacement and field upgrades, with the exception of the RSP card on the ASR 902U Router, which requires the system to be brought down for a replacement or upgrade.