The Cisco A920-PWR400-D is a 400W DC power supply module designed for the Cisco ASR 920 Series Aggregation Services Routers. Engineered for high efficiency and reliability, this compact power supply ensures consistent performance to support demanding service provider and enterprise network environments. It delivers dependable DC input power and integrates seamlessly into the ASR 920 chassis, offering both stability and energy efficiency. The A920-PWR400-D is hot-swappable, allowing for simplified installation and replacement without disrupting system operations. With carrier-class reliability, it helps maintain network uptime while reducing operational risks. Ideal for deployments requiring space-saving designs and robust power delivery, the Cisco A920-PWR400-D ensures your ASR 920 routers run efficiently, supporting advanced Carrier Ethernet and IP/MPLS services with confidence.